This page lists 161 electrical switch & relay parts for the 2018 Ram 2500, across 42 part types, covering all 3 engine options (5.7L V8, 6.4L V8 and 6.7L L6 DIESEL Turbocharged). Every part shows its brand, manufacturer part number and fitment notes.
On the 2018 Ram 2500, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches. 58 parts of the 161 listed are Power Window Switch (25 parts), Door Lock Switch (22 parts) and Headlamp Switch (11 parts). The other 39 part types cover the remaining 103 parts.
The 2018 Ram 2500 was sold with 3 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2018 Ram 2500 electrical switch & relay parts are STANDARD MOTOR PRODUCTS (39 parts), MOPAR (34 parts) and WELLS (34 parts), plus 14 more brands. Quality grades include Standard Replacement and Economy.
23 parts on this 2018 Ram 2500 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including UAC SW10008C (A/C Refrigerant Pressure Switch) and ULTRA-POWER DWS1900 (Door Lock Switch). Click any part number to see every vehicle that part fits.
4WD Indicator Light Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | TCA64 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the 4WD Indicator Light switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
One part is listed for the 2018 Ram 2500 — STANDARD MOTOR PRODUCTS TCA64.
4WD Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 5.7L V8, 6.4L V8 | 68211454AA | 🇺🇸 US 🇨🇦 CA | Fits Manual Shift-on-the-Fly Transfer CaseMega Cabor Manual Shift-on-the-Fly Transfer Case | View on Amazon |
| MOPAR Fits: 5.7L V8, 6.4L V8 | 68142281AE | 🇺🇸 US 🇨🇦 CA | Fits Electric Shift-On-The-Fly Transfer CaseMega Cabor Electric Shift-On-The-Fly Transfer Case | View on Amazon |
| MOPAR Fits: 5.7L V8, 6.4L V8 | 68142283AF | 🇺🇸 US 🇨🇦 CA | Fits Manual Shift-On-The-Fly Transfer Case, Front Disconnecting Stabilizer Bar, TRU-LOK Front & Rear AxlesCrew Cab Crew Cab | View on Amazon |
This table covers the 4WD switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
3 4WD Switch parts for the 2018 Ram 2500 come from MOPAR.
Part numbers include MOPAR 68211454AA, MOPAR 68142281AE and MOPAR 68142283AF.
A/C Compressor Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 5.7L V8, 6.4L V8 | 933332641 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 5-Pin ConnectorColor: Black, Gray | View on Amazon |
This table covers the relays that control the A/C Compressor circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
This group shows a single part: HELLA 933332641.
A/C Refrigerant Pressure Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| UAC Popular Fits: 5.7L V8, 6.4L V8 | SW10008C | 🇺🇸 US | Pressure Transducer | View on Amazon |
| DORMAN Fits: 5.7L V8, 6.4L V8 | 904620 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| FACET Fits: 5.7L V8, 6.4L V8 | 250074 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| FOUR SEASONS Fits: 5.7L V8, 6.4L V8 | 37368 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Pressure Switch | View on Amazon |
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S15798 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | CUT-OFF | View on Amazon |
This table covers the pressure switches on the A/C circuit. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
5 A/C Refrigerant Pressure Switch parts for the 2018 Ram 2500 come from 5 brands — UAC, DORMAN, FACET and 2 other brands. The "Popular" part is UAC SW10008C.
This group includes UAC SW10008C, DORMAN 904620 and FACET 250074 and the remaining parts above.
A/C Thermo Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD Fits: 5.7L V8, 6.4L V8 | 1713019 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Evaporator Temperature Sensor45 Degree Angle | View on Amazon |
This table covers the A/C Thermo switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
One part is listed for the 2018 Ram 2500 — GPD 1713019.
Accessory Power Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 5.7L V8, 6.4L V8 | 933332531 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 4-Pin ConnectorPlug: B | View on Amazon |
This table covers the relays that control the Accessory Power circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
One part is listed for the 2018 Ram 2500 — HELLA 933332531.
Adjustable Pedal Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 5.7L V8, 6.4L V8 | 56046113AA | 🇺🇸 US 🇨🇦 CA | Fits Power Adjustable Pedals with Memory or Power Adjustable PedalsExc. Heated Steering Wheel | View on Amazon |
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S16026 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the Adjustable Pedal switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
2 Adjustable Pedal Switch parts for the 2018 Ram 2500 come from 2 brands — MOPAR and WELLS.
Listed part numbers: MOPAR 56046113AA and WELLS 1S16026.
Back Up / Reverse Lamp Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | NS485 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the Back Up / Reverse Lamp switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
This group shows a single part: STANDARD MOTOR PRODUCTS NS485.
Blower Motor Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 5.7L V8, 6.4L V8 | 933332641 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 5-Pin ConnectorColor: Black, Gray | View on Amazon |
| ROSTRA Fits: 5.7L V8, 6.4L V8 | 600230 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the relays that control the Blower Motor circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
2 Blower Motor Relay parts for the 2018 Ram 2500 come from 2 brands — HELLA and ROSTRA.
Part numbers include HELLA 933332641 and ROSTRA 600230.
Brake Light Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 5.7L V8, 6.4L V8 | 920626 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| VEMO Fits: 5.7L V8, 6.4L V8 | V33730040 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Big Horn or SLT Model or TradesmanElectric | View on Amazon |
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S17828 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Mounting Hardware Included: No | View on Amazon |
This table covers the pedal-mounted switch that turns on the brake lamps. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
3 Brake Light Switch parts for the 2018 Ram 2500 come from 3 brands — DORMAN, VEMO and WELLS.
Listed part numbers: DORMAN 920626, VEMO V33730040 and WELLS 1S17828.
Cruise Control Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 5.7L V8, 6.4L V8 | 601607 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Right4 Button | View on Amazon |
| VEMO Fits: 5.7L V8, 6.4L V8 | V33800017 | 🇺🇸 US 🇨🇦 CA | Fits Big Hornor CNGSLT Modelor GAS | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S11775 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the Cruise Control switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
3 Cruise Control Switch parts are listed for the 2018 Ram 2500, from DORMAN, VEMO and WELLS.
In the Economy grade, DORMAN and VEMO supply 2 parts: the catalog's value-priced group. A representative part number is DORMAN 601607.
The Standard Replacement section lists 1 option from WELLS — built to original-equipment specification. WELLS 1S11775 is listed in this group.
Part numbers include DORMAN 601607, VEMO V33800017 and WELLS 1S11775.
Defroster Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 5.7L V8, 6.4L V8 | 933332641 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 5-Pin ConnectorColor: Black, Gray | View on Amazon |
This table covers the relays that control the Defroster circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
This group shows a single part: HELLA 933332641.
Dimmer Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | CBS1925 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S11313 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the dimmer switches that select headlamp high and low beam. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
2 Dimmer Switch parts are listed for the 2018 Ram 2500, from STANDARD MOTOR PRODUCTS and WELLS.
Listed part numbers: STANDARD MOTOR PRODUCTS CBS1925 and WELLS 1S11313.
Door Lock Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER Popular Fits: 5.7L V8, 6.4L V8 | DWS1900 | 🇺🇸 US 🇨🇦 CA | Front LeftPower Door Lock Switch | View on Amazon |
| ULTRA-POWER Fits: 5.7L V8, 6.4L V8 | DWS1993 | 🇺🇸 US 🇨🇦 CA | RightPower Door Lock Switch | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Popular Fits: 5.7L V8, 6.4L V8 | 56046826AE | 🇺🇸 US 🇨🇦 CA | Fits FrontPower Locks, Power Front Windows, 1-Touch,Up & Down, Power-Folding Mirrors | View on Amazon |
| MOPAR Popular Fits: 5.7L V8, 6.4L V8 | 56046823AE | 🇺🇸 US 🇨🇦 CA | Fits FrontPower Locks, Power Front Windows, 1-Touch, up & Down | View on Amazon |
| ROSTRA Popular Fits: 5.7L V8, 6.4L V8 | 660272 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Rightwithout Luxury Package | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: 5.7L V8, 6.4L V8 | DWS1647 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Rightwithout Luxury Package | View on Amazon |
| MOPAR Fits: 5.7L V8, 6.4L V8 | 68148892AB | 🇺🇸 US 🇨🇦 CA | FrontPower Locks, Power Windows, Front 1-Touch Down | View on Amazon |
| MOPAR Fits: 5.7L V8, 6.4L V8 | 68275823AC | 🇺🇸 US 🇨🇦 CA | Fits FrontPower Locks, Power Front Windows, 1-Touch, up & Down | View on Amazon |
| MOPAR Fits: 5.7L V8, 6.4L V8 | 68148893AB | 🇺🇸 US 🇨🇦 CA | Fits FrontPower Locks, Power Windows, Front 1-Touch Down | View on Amazon |
| ROSTRA Fits: 5.7L V8, 6.4L V8 | 660748 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Leftwith Power Folding Mirrors | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | DWS1994 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | RightStandard Cab Pickup | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | DWS1993 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Attachment Method: Push On | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | DWS1837 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Rightwith Luxury Package | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | DWS1706 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front LeftCrew Cab Pickup or Extended Cab Pickup or Extended Crew Cab Pickup | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | DWS1899 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front LeftStandard Cab Pickup | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | DWS1900 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front LeftStandard Cab Pickup | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | DWS1711 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front LeftCrew Cab Pickup or Extended Cab Pickup or Extended Crew Cab Pickup | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | DWS1897 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front LeftCrew Cab Pickup or Extended Cab Pickup or Extended Crew Cab Pickup | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | DWS1898 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front LeftCrew Cab Pickup or Extended Cab Pickup or Extended Crew Cab Pickup | View on Amazon |
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S13424 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Rightwithout Luxury Package | View on Amazon |
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S14283 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front LeftStandard Cab Pickup | View on Amazon |
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S14262 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front LeftCrew Cab Pickup or Extended Cab Pickup or Extended Crew Cab Pickup | View on Amazon |
This table covers the Door Lock switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
22 Door Lock Switch parts for the 2018 Ram 2500 come from 5 brands — STANDARD MOTOR PRODUCTS, MOPAR, WELLS and 2 other brands. The "Popular" part is ULTRA-POWER DWS1900.
The Economy section: 2 options from ULTRA-POWER. ULTRA-POWER DWS1900 is listed in this group.
Standard Replacement: 20 parts, from STANDARD MOTOR PRODUCTS, MOPAR, WELLS and 1 other brand. A representative part number is MOPAR 56046826AE.
Fog / Driving Lamp Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S13321 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Functions: Headlight, Auto Headlight, Parking Light, Fog Light, Cargo Light, Instrument Panel Dimmer | View on Amazon |
This table covers the Fog / Driving Lamp switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
One part is listed for the 2018 Ram 2500 — WELLS 1S13321.
Fuel Door Release Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 5.7L V8, 6.4L V8 | 68067517AA | 🇺🇸 US 🇨🇦 CA | Fits Ram Box Cargo Management SystemRemote Keyless Entry | View on Amazon |
This table covers the Fuel Door Release switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
This group shows a single part: MOPAR 68067517AA.
Glove Box Lamp Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 5.7L V8, 6.4L V8 | 4565022 | 🇺🇸 US 🇨🇦 CA | Fits Glove Box LampMega Cabor Glove Box Lamp | View on Amazon |
| ROSTRA Fits: 5.7L V8, 6.4L V8 | 651381 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S2892 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the Glove Box Lamp switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
3 Glove Box Lamp Switch parts are listed for the 2018 Ram 2500, from MOPAR, ROSTRA and WELLS.
Listed part numbers: MOPAR 4565022, ROSTRA 651381 and WELLS 1S2892.
Headlamp Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AUTOTECNICA Fits: 5.7L V8, 6.4L V8 | RM1320829 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fog Lamps | View on Amazon |
| SKP Fits: 5.7L V8 | SKHLS1686 | 🇺🇸 US 🇨🇦 CA | CNGwithout Fog Lights | View on Amazon |
| SKP Fits: 5.7L V8, 6.4L V8 | SKHLS1685 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Fog Lights | View on Amazon |
| ULTRA-POWER Fits: 5.7L V8, 6.4L V8 | HLS1686 | 🇺🇸 US 🇨🇦 CA | without Fog Lights | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA Popular Fits: 5.7L V8, 6.4L V8 | 650225 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Fog Lights | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: 5.7L V8, 6.4L V8 | HLS1686 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | without Fog Lights | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: 5.7L V8, 6.4L V8 | HLS1685 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Fog Lights | View on Amazon |
| MOPAR Fits: 5.7L V8, 6.4L V8 | 68269910AA | 🇺🇸 US 🇨🇦 CA | Fits Automatic HeadlampsCargo Lamp | View on Amazon |
| ROSTRA Fits: 5.7L V8, 6.4L V8 | 650140 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | without Fog Lights | View on Amazon |
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S13330 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Functions: Headlight, Auto Headlight, Parking Light, Cargo Light, Instrument Panel Dimmer | View on Amazon |
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S13321 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Functions: Headlight, Auto Headlight, Parking Light, Fog Light, Cargo Light, Instrument Panel Dimmer | View on Amazon |
This table covers the column or dash switches that control the exterior lamps. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
11 Headlamp Switch parts are listed for the 2018 Ram 2500, from SKP, ROSTRA, STANDARD MOTOR PRODUCTS and 4 other brands. ROSTRA 650225 carries the "Popular" badge.
Economy: 4 parts, from SKP, AUTOTECNICA and ULTRA-POWER. A representative part number is AUTOTECNICA RM1320829.
The Standard Replacement section: 7 options from ROSTRA, STANDARD MOTOR PRODUCTS, WELLS and 1 other brand. ROSTRA 650225 is listed in this group.
Hood Ajar Indicator Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 5.7L V8, 6.4L V8 | 4707875AB | 🇺🇸 US 🇨🇦 CA | Fits Ram Box Cargo Management SystemRemote Keyless Entry | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | DS2264 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the Hood Ajar Indicator switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
2 Hood Ajar Indicator Switch parts for the 2018 Ram 2500 come from 2 brands — MOPAR and STANDARD MOTOR PRODUCTS.
Listed part numbers: MOPAR 4707875AB and STANDARD MOTOR PRODUCTS DS2264.
HVAC Control Switch / Panel
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 5.7L V8, 6.4L V8 | 68268188AA | 🇺🇸 US 🇨🇦 CA | Fits A/CExcept 8.4" Touchscreen Display or Exterior Mirrors with Heating Element | View on Amazon |
| MOPAR Fits: 5.7L V8, 6.4L V8 | 68268189AA | 🇺🇸 US 🇨🇦 CA | Fits Air Conditioning, Exterior Mirrors with Heating Element | View on Amazon |
| MOPAR Fits: 5.7L V8, 6.4L V8 | 1UJ96DX9AK | 🇺🇸 US 🇨🇦 CA | Upper | View on Amazon |
| MOPAR Fits: 5.7L V8, 6.4L V8 | 5VD73JXPAD | 🇺🇸 US 🇨🇦 CA | Upper | View on Amazon |
This table covers the HVAC Control Switch panels.
MOPAR supplies the 4 HVAC Control Switch / Panel parts for the 2018 Ram 2500.
Listed part numbers: MOPAR 68268188AA, MOPAR 68268189AA and MOPAR 1UJ96DX9AK, plus the other parts above.
Ignition Starter Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 5.7L V8, 6.4L V8 | 601086 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Requires Pin From Original Mfg For Proper Programming | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Popular Fits: 5.7L V8, 6.4L V8 | 68271986AC | 🇺🇸 US 🇨🇦 CA | Fits Except Pushbutton StartRegular Cab, 8 Foot Bedor Except Pushbutton Start | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: 5.7L V8, 6.4L V8 | US1292 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | DASH MOUNTED | View on Amazon |
| MOPAR Fits: 5.7L V8, 6.4L V8 | 6CK46DX9AC | 🇺🇸 US 🇨🇦 CA | PUSH BUTTON | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | US1494 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Located On Steering Column | View on Amazon |
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S16362 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the ignition switches that feed the starter circuit. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
6 Ignition Starter Switch parts are listed for the 2018 Ram 2500, from MOPAR, STANDARD MOTOR PRODUCTS, DORMAN and 1 other brand. MOPAR 68271986AC carries the "Popular" badge.
Economy: 1 part, from DORMAN. A representative part number is DORMAN 601086.
The Standard Replacement section: 5 options from MOPAR, STANDARD MOTOR PRODUCTS and WELLS. MOPAR 68271986AC is listed in this group.
This group includes MOPAR 68271986AC, DORMAN 601086 and STANDARD MOTOR PRODUCTS US1292 and the remaining parts above.
Instrument Cluster Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Popular Fits: 5.7L V8, 6.4L V8 | 68231814AD | 🇺🇸 US 🇨🇦 CA | Fits Diesel Exhaust Brake, Black SwitchesExc. Parksense Rear Park Assist System or Auto Level Rear Air Suspension or Parksense Front/Rear Park Assist System or Hill Descent Control | View on Amazon |
| MOPAR Fits: 5.7L V8, 6.4L V8 | 68247636AA | 🇺🇸 US 🇨🇦 CA | Fits Ventilated Front Seats, Heated Front Seats, Heated Steering Wheel, Parksense Front/Rear Park Assist SystemExc. Black Switches or Diesel Exhaust Brake or Auto Level Rear Air Suspension or Hill Descent Control or Parksense Rear Park Assist System | View on Amazon |
| MOPAR Fits: 5.7L V8, 6.4L V8 | 68231813AD | 🇺🇸 US 🇨🇦 CA | Fits Diesel Exhaust Brake, Black SwitchesExc. Parksense Rear Park Assist System or Auto Level Rear Air Suspension or Parksense Front/Rear Park Assist System or Hill Descent Control | View on Amazon |
| MOPAR Fits: 5.7L V8, 6.4L V8 | 68231819AD | 🇺🇸 US 🇨🇦 CA | Fits Black SwitchesExc. DIESEL Exhaust Brake or Parksense Rear Park Assist System or Auto Level Rear Air Suspension or Hill Descent Control or Parksense Front/Rear Park Assist System | View on Amazon |
| MOPAR Fits: 5.7L V8, 6.4L V8 | 68241336AA | 🇺🇸 US 🇨🇦 CA | Fits DIESEL Exhaust Brake, Parksense Rear Park Assist SystemExcept Heated Front Seats or Heated Steering Wheel or Ventilated Front Seats or Black Switches or Auto Level Rear Air Suspension or Parksense Front/Rear Park Assist System or Hill Descent Control | View on Amazon |
| MOPAR Fits: 5.7L V8, 6.4L V8 | 68241337AA | 🇺🇸 US 🇨🇦 CA | Fits DIESEL Exhaust Brake, Parksense Rear Park Assist System , DIESEL Exhaust Brake, Parksense Rear Park Assist SystemExcept Heated Front Seats or Heated Steering Wheel or Ventilated Front Seats or Black Switches or Auto Level Rear Air Suspension or Parksense Front/Rear Park Assist System or Hill Descent Control | View on Amazon |
| MOPAR Fits: 5.7L V8, 6.4L V8 | 68241338AA | 🇺🇸 US 🇨🇦 CA | Fits Parksense Rear Park Assist System, DIESEL Exhaust Brake, Heated Front Seats, Heated Steering WheelExc. Ventilated Front Seats or Black Switches or Auto Level Rear Air Suspension or Parksense Front/Rear Park Assist System or Hill Descent Control | View on Amazon |
This table covers the Instrument Cluster switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
7 Instrument Cluster Switch parts for the 2018 Ram 2500 come from MOPAR. The "Popular" part is MOPAR 68231814AD.
Listed part numbers: MOPAR 68231814AD, MOPAR 68247636AA and MOPAR 68231813AD, plus the other parts above.
Instrument Panel Dimmer Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S13321 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Functions: Headlight, Auto Headlight, Parking Light, Fog Light, Cargo Light, Instrument Panel Dimmer | View on Amazon |
This table covers the Instrument Panel Dimmer switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
This group shows a single part: WELLS 1S13321.
Micro Plug Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 5.7L V8, 6.4L V8 | 933332641 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 5-Pin ConnectorColor: Black, Gray | View on Amazon |
This table covers the relays that control the Micro Plug circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
This group shows a single part: HELLA 933332641.
Multi-Function Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 5.7L V8, 6.4L V8 | 1R1061 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Amperage Rating: 40 AConnector Gender: Male | View on Amazon |
| WELLS Fits: 5.7L V8, 6.4L V8 | 1R2407 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Mounting Hardware Included: No | View on Amazon |
| WELLS Fits: 5.7L V8, 6.4L V8 | 1R2491 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Stamping # 13742705 or # 4671886AA | View on Amazon |
This table covers the relays that control the Multi-Function circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
3 Multi-Function Relay parts for the 2018 Ram 2500 come from WELLS.
Part numbers include WELLS 1R1061, WELLS 1R2407 and WELLS 1R2491.
Oil Pressure Sender / Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular Fits: 5.7L V8, 6.4L V8 | 926337 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| UNITED MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | OPS348 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Gauge | View on Amazon |
| WALKER PRODUCTS Fits: 5.7L V8, 6.4L V8 | 2561030 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Gender: Female | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Popular Fits: 5.7L V8, 6.4L V8 | 1S14330 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| ROSTRA Fits: 5.7L V8, 6.4L V8 | 501563 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits CNGSLT Modelor CNG | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | PS674 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Terminal Type: Blade | View on Amazon |
This table covers the senders and switches that report oil pressure to the gauge or lamp. Typical signs include a lamp that stays on, or a gauge that never moves. Confirm power and ground at the connector before replacing the sender or switch.
6 Oil Pressure Sender / Switch parts for the 2018 Ram 2500 come from 6 brands — DORMAN, UNITED MOTOR PRODUCTS, WALKER PRODUCTS and 3 other brands. The "Popular" part is DORMAN 926337.
The Economy section: 3 options from DORMAN, UNITED MOTOR PRODUCTS and WALKER PRODUCTS. DORMAN 926337 is listed in this group.
Standard Replacement: 3 parts, from WELLS, ROSTRA and STANDARD MOTOR PRODUCTS. A representative part number is WELLS 1S14330.
Part numbers include DORMAN 926337, UNITED MOTOR PRODUCTS OPS348 and WALKER PRODUCTS 2561030, among others listed above.
Outside Mirror Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER Fits: 5.7L V8, 6.4L V8 | DWS1897 | 🇺🇸 US 🇨🇦 CA | Remotewithout Power Folding Mirror Switch | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | DWS1899 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Standard Cab Pickupwithout Power Folding Mirrors | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | DWS1897 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Crew Cab Pickup or Extended Cab Pickup or Extended Crew Cab Pickupwithout Power Folding Mirrors | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | DWS1898 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Crew Cab Pickup or Extended Cab Pickup or Extended Crew Cab Pickupwith Power Folding Mirrors | View on Amazon |
This table covers the Outside Mirror switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
4 Outside Mirror Switch parts are listed for the 2018 Ram 2500, from STANDARD MOTOR PRODUCTS and ULTRA-POWER.
Economy: 1 part, from ULTRA-POWER. A representative part number is ULTRA-POWER DWS1897.
The Standard Replacement section: 3 options from STANDARD MOTOR PRODUCTS. STANDARD MOTOR PRODUCTS DWS1899 is listed in this group.
Listed part numbers: ULTRA-POWER DWS1897 and STANDARD MOTOR PRODUCTS DWS1899, plus the other parts above.
Oxygen (O2) Sensor Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 5.7L V8, 6.4L V8 | 933332641 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 5-Pin ConnectorColor: Black, Gray | View on Amazon |
This table covers the relays that control the Oxygen (O2) Sensor circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
This group shows a single part: HELLA 933332641.
Parking Brake Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 5.7L V8, 6.4L V8 | 4221463 | 🇺🇸 US 🇨🇦 CA | Fits MEGA CAB | View on Amazon |
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S4788 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the Parking Brake switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
2 Parking Brake Switch parts for the 2018 Ram 2500 come from 2 brands — MOPAR and WELLS.
This group includes MOPAR 4221463 and WELLS 1S4788.
Parking Lamp Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | RY1627 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the relays that control the Parking Lamp circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
This group shows a single part: STANDARD MOTOR PRODUCTS RY1627.
Power Seat Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 5.7L V8, 6.4L V8 | 901477 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left8 Way | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Popular Fits: 5.7L V8, 6.4L V8 | 56040636AC | 🇺🇸 US 🇨🇦 CA | Fits RightDriver Seat - Power Adjust 10-Way, Front Passenger Seat - Power Adjust 6-Way | View on Amazon |
| MOPAR Popular Fits: 5.7L V8, 6.4L V8 | 56049433AF | 🇺🇸 US 🇨🇦 CA | EconomyLowline | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | PMS12 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Adjusts Seat Memory Function | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | PSW126 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Left | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | PSW127 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Leftwith Memory Seats | View on Amazon |
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S17150 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Adjusts Seat Memory Function | View on Amazon |
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S16027 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Lumbar Switch | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 5.7L V8, 6.4L V8 | 56049433AG | 🇺🇸 US 🇨🇦 CA | Fits LeftDriver Seat - Power Adjust 10-Way | View on Amazon |
This table covers the Power Seat switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
9 Power Seat Switch parts are listed for the 2018 Ram 2500, from MOPAR, STANDARD MOTOR PRODUCTS, WELLS and 1 other brand. MOPAR 56040636AC carries the "Popular" badge.
Economy: 1 part, from DORMAN. A representative part number is DORMAN 901477.
The Standard Replacement section: 7 options from STANDARD MOTOR PRODUCTS, MOPAR and WELLS. MOPAR 56040636AC is listed in this group.
1 ungrouped part is not assigned to a grade, with the same engine-level match.
Part numbers include MOPAR 56040636AC, DORMAN 901477 and MOPAR 56049433AF, among others listed above.
Power Window Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular Fits: 5.7L V8, 6.4L V8 | 920541 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front RightCrew Cab Pickup or Extended Cab Pickup or Extended Crew Cab Pickup | View on Amazon |
| DORMAN Popular Fits: 5.7L V8, 6.4L V8 | 901989 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front LeftCrew Cab Pickup or Extended Cab Pickup or Extended Crew Cab Pickup | View on Amazon |
| DORMAN Popular Fits: 5.7L V8, 6.4L V8 | 901466 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front LeftCrew Cab Pickup or Extended Cab Pickup or Extended Crew Cab Pickup | View on Amazon |
| DORMAN Fits: 5.7L V8, 6.4L V8 | 920508 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits Rear LeftCrew Cab Pickup or Extended Cab Pickup or Extended Crew Cab Pickup | View on Amazon |
| SHEE-MAR Fits: 5.7L V8, 6.4L V8 | SM1898 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front LeftCrew Cab Pickup or Extended Crew Cab Pickup | View on Amazon |
| SKP Fits: 5.7L V8, 6.4L V8 | SKDWS1899 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left | View on Amazon |
| ULTRA-POWER Fits: 5.7L V8, 6.4L V8 | DWS1993 | 🇺🇸 US 🇨🇦 CA | Front Right4 DR | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 5.7L V8, 6.4L V8 | DWS1899 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front LeftStandard Cab Pickup | View on Amazon |
| WELLS Popular Fits: 5.7L V8, 6.4L V8 | 1S13424 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Rightwithout Luxury Package | View on Amazon |
| MOPAR Fits: 5.7L V8, 6.4L V8 | 56046832AC | 🇺🇸 US 🇨🇦 CA | Fits LeftPower Front Windows, 1-Touch Up and Down | View on Amazon |
| ROSTRA Fits: 5.7L V8, 6.4L V8 | 660175 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear | View on Amazon |
| ROSTRA Fits: 5.7L V8, 6.4L V8 | 660748 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Leftwith Power Folding Mirrors | View on Amazon |
| ROSTRA Fits: 5.7L V8, 6.4L V8 | 660169 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Leftwithout Power Folding Mirrors | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | DWS1649 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rearwithout One Touch Window Open/Close | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | DWS1994 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front RightStandard Cab Pickup | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | DWS1993 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Attachment Method: Push On | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | DWS1897 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front LeftCrew Cab Pickup or Extended Cab Pickup or Extended Crew Cab Pickup | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | DWS1898 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front LeftCrew Cab Pickup or Extended Cab Pickup or Extended Crew Cab Pickup | View on Amazon |
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S12999 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear | View on Amazon |
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S15516 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Rightwithout One-Touch Open Windows | View on Amazon |
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S14282 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front LeftStandard Cab Pickup | View on Amazon |
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S14283 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front LeftStandard Cab Pickup | View on Amazon |
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S14262 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front LeftCrew Cab Pickup or Extended Cab Pickup or Extended Crew Cab Pickup | View on Amazon |
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S14257 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front LeftCrew Cab Pickup or Extended Cab Pickup or Extended Crew Cab Pickup | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AUTOTECNICA Fits: 5.7L V8, 6.4L V8 | CY1322699 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left | View on Amazon |
This table covers the switches that command each window motor. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
25 Power Window Switch parts for the 2018 Ram 2500 come from 9 brands — WELLS, STANDARD MOTOR PRODUCTS, DORMAN and 6 other brands. The "Popular" part is DORMAN 920541.
The Economy section: 7 options from DORMAN, SHEE-MAR, SKP and 1 other brand. DORMAN 920541 is listed in this group.
Standard Replacement: 17 parts, from WELLS, STANDARD MOTOR PRODUCTS, ROSTRA and 1 other brand. A representative part number is STANDARD MOTOR PRODUCTS DWS1899.
1 further part sits outside the graded sections, with the same engine-level match.
Radiator Fan Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 5.7L V8, 6.4L V8 | 933332641 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 5-Pin ConnectorColor: Black, Gray | View on Amazon |
This table covers the relays that control the Radiator Fan circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
One part is listed for the 2018 Ram 2500 — HELLA 933332641.
Seat Heater Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | HSS124 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Left | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | HSS120 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Right | View on Amazon |
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S17438 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Left | View on Amazon |
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S17439 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Right | View on Amazon |
This table covers the Seat Heater switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
4 Seat Heater Switch parts are listed for the 2018 Ram 2500, from STANDARD MOTOR PRODUCTS and WELLS.
This group includes STANDARD MOTOR PRODUCTS HSS124, STANDARD MOTOR PRODUCTS HSS120 and WELLS 1S17438 and the remaining parts above.
Seat Lumbar Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 5.7L V8, 6.4L V8 | 68157564AA | 🇺🇸 US 🇨🇦 CA | Fits Driver Seat - Power Adjust 10-Way, Heated Front SeatsExc. Front Passenger Seat - Power Adjust 6-Way | View on Amazon |
| MOPAR Fits: 5.7L V8, 6.4L V8 | 68269185AA | 🇺🇸 US 🇨🇦 CA | Fits Driver Seat - Power Adjust 10-Way, Front Passenger Seat - Power Adjust 6-WayPassenger Side | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | PSW165 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left | View on Amazon |
This table covers the Seat Lumbar switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
3 Seat Lumbar Switch parts are listed for the 2018 Ram 2500, from MOPAR and STANDARD MOTOR PRODUCTS.
Listed part numbers: MOPAR 68157564AA, MOPAR 68269185AA and STANDARD MOTOR PRODUCTS PSW165.
Steering Wheel Audio Control Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 5.7L V8, 6.4L V8 | 56054450AA | 🇺🇸 US 🇨🇦 CA | Steering WheelEvic | View on Amazon |
This table covers the Steering Wheel Audio Control switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
This group shows a single part: MOPAR 56054450AA.
Sunroof / Sunshade Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | DS3500 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S16033 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the Sunroof / Sunshade switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
2 Sunroof / Sunshade Switch parts are listed for the 2018 Ram 2500, from STANDARD MOTOR PRODUCTS and WELLS.
This group includes STANDARD MOTOR PRODUCTS DS3500 and WELLS 1S16033.
Trailer Brake Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SHEE-MAR Popular Fits: 5.7L V8, 6.4L V8 | SM1902 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Trailer Tow RelayNOT for Add-On | View on Amazon |
| AUTOTECNICA Fits: 5.7L V8, 6.4L V8 | RM0222121 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| DORMAN Fits: 5.7L V8, 6.4L V8 | 601235 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Switch Only | View on Amazon |
| SKP Fits: 5.7L V8, 6.4L V8 | SK959A01 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Switch Only | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | TBM007 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the Trailer Brake switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
5 Trailer Brake Switch parts are listed for the 2018 Ram 2500, from SHEE-MAR, AUTOTECNICA, DORMAN and 2 other brands. SHEE-MAR SM1902 carries the "Popular" badge.
This group includes SHEE-MAR SM1902, AUTOTECNICA RM0222121 and DORMAN 601235 and the remaining parts above.
Transmission-Automatic Fluid Pressure Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO Fits: 5.7L V8, 6.4L V8 | V33770047 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Trans. code 66RFE | View on Amazon |
This table covers the Transmission-Automatic Fluid Pressure switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
This group shows a single part: VEMO V33770047.
Trunk / Cargo Area Lamp Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S13321 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Functions: Headlight, Auto Headlight, Parking Light, Fog Light, Cargo Light, Instrument Panel Dimmer | View on Amazon |
This table covers the Trunk / Cargo Area Lamp switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
One part is listed for the 2018 Ram 2500 — WELLS 1S13321.
Turn Signal Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 5.7L V8, 6.4L V8 | 901279 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| VEMO Fits: 5.7L V8, 6.4L V8 | V33730055 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| VEMO Fits: 5.7L V8, 6.4L V8 | V33730073 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Big Horn or SLT Model or Tradesman | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Popular Fits: 5.7L V8, 6.4L V8 | 1S11313 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | CBS1925 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the combination / turn-signal switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
5 Turn Signal Switch parts for the 2018 Ram 2500 come from 4 brands — VEMO, DORMAN, WELLS and 1 other brand. The "Popular" part is WELLS 1S11313.
The Economy section: 3 options from VEMO and DORMAN. DORMAN 901279 is listed in this group.
Standard Replacement: 2 parts, from WELLS and STANDARD MOTOR PRODUCTS. A representative part number is WELLS 1S11313.
Listed part numbers: WELLS 1S11313, DORMAN 901279 and VEMO V33730055, plus the other parts above.
Wiper / Washer Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8, 6.4L V8 | CBS1925 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WELLS Fits: 5.7L V8, 6.4L V8 | 1S11313 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the Wiper / Washer switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
2 Wiper / Washer Switch parts are listed for the 2018 Ram 2500, from STANDARD MOTOR PRODUCTS and WELLS.
This group includes STANDARD MOTOR PRODUCTS CBS1925 and WELLS 1S11313.
Buying Electrical Switch & Relay Parts for a 2018 Ram 2500
On this vehicle, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches.
- Match the engine first. Every electrical switch & relay part here is engine-specific; each row shows which engine(s) it fits.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Power Window Switch and Door Lock Switch .
Frequently Asked Questions
How many electrical switch & relay parts fit the 2018 Ram 2500?
Our catalog currently lists 161 electrical switch & relay parts for the 2018 Ram 2500 across 42 subcategories and 17 brands, covering all 3 engine options (5.7L V8, 6.4L V8 and 6.7L L6 DIESEL Turbocharged). Each part is matched to the engine(s) it fits.
Do electrical switch & relay parts differ between 2018 Ram 2500 engines?
Yes. Every electrical switch & relay part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of electrical switch & relay problems on a 2018 Ram 2500?
Common symptoms include accessories that work intermittently, a click without action, or one function dead while its fuse tests fine. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2018 Ram 2500 was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2018 Ram 2500?
First match the engine — each row shows which engine(s) the part fits. Then swap a suspect relay with an identical known-good one from the fuse box before buying — it is the fastest diagnostic there is. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2018 Ram 2500
Electrical Switch & Relay Parts for Other Ram 2500 Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.