This page lists 112 electrical switch & relay parts for the 2018 Ram 5500, across 29 part types, covering both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged. Every part shows its brand, manufacturer part number and fitment notes.
On the 2018 Ram 5500, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches. 37 parts of the 112 listed are Power Window Switch (18 parts), Door Lock Switch (11 parts) and Oil Pressure Sender / Switch (8 parts). The other 26 part types cover the remaining 75 parts.
The 2018 Ram 5500 was sold with both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged. 100 parts fit every engine; the other 12 are engine-specific. Each part shows which engine(s) it fits.
14 brands supply electrical switch & relay parts for the 2018 Ram 5500, led by MOPAR (33 parts), STANDARD MOTOR PRODUCTS (23 parts) and WELLS (22 parts), plus 11 more brands. Quality grades include Standard Replacement and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2018 Ram 5500. 18 parts have it, including UNITED MOTOR PRODUCTS SW403 (Brake Light Switch) and MOPAR 68148892AB (Door Lock Switch). Each part number opens a page with every vehicle that part fits.
4WD Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: all 2018 5500 engines | 68142281AE | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisElectric Shift-On-The-Fly Transfer Case | 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.
One part is listed for the 2018 Ram 5500 — MOPAR 68142281AE.
A/C Refrigerant Pressure Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: all 2018 5500 engines | 904620 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: all 2018 5500 engines | 1S15798 | 🇺🇸 US 🇨🇦 CA | 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.
2 A/C Refrigerant Pressure Switch parts are listed for the 2018 Ram 5500, from DORMAN and WELLS. All of them fit every engine offered in the 2018 5500.
Part numbers include DORMAN 904620 and WELLS 1S15798.
A/C Thermo Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD Fits: all 2018 5500 engines | 1713019 | 🇺🇸 US 🇨🇦 CA | 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.
This group shows a single part: GPD 1713019.
Adjustable Pedal Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: all 2018 5500 engines | 56046113AA | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisPower Adjustable Pedals with Memory or Power Adjustable Pedals | 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.
One part is listed for the 2018 Ram 5500 — MOPAR 56046113AA.
Brake Light Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: all 2018 5500 engines | 901259 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| UNITED MOTOR PRODUCTS Popular Fits: all 2018 5500 engines | SW403 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 4671336AD | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisCummins Engine | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO Fits: all 2018 5500 engines | V33730040 | 🇺🇸 US 🇨🇦 CA | Electric7 8700AE | View on Amazon |
| WELLS Fits: all 2018 5500 engines | 1S17828 | 🇺🇸 US 🇨🇦 CA | 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.
5 Brake Light Switch parts are listed for the 2018 Ram 5500, from DORMAN, UNITED MOTOR PRODUCTS, MOPAR and 2 other brands. UNITED MOTOR PRODUCTS SW403 carries the "Popular" badge. 4 parts fit every engine; the other 1 is engine-specific.
In the Economy grade, DORMAN supplies 1 part: the catalog's value-priced group. A representative part number is DORMAN 901259.
The Standard Replacement section lists 2 options from UNITED MOTOR PRODUCTS and MOPAR — built to original-equipment specification. UNITED MOTOR PRODUCTS SW403 is listed in this group.
2 ungrouped parts are not assigned to a grade, with the same engine-level match.
Part numbers include UNITED MOTOR PRODUCTS SW403, DORMAN 901259 and MOPAR 4671336AD, among others listed above.
Cruise Control Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: all 2018 5500 engines | 601607 | 🇺🇸 US 🇨🇦 CA | Right4 Button | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: all 2018 5500 engines | 1S11775 | 🇺🇸 US 🇨🇦 CA | 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.
2 Cruise Control Switch parts for the 2018 Ram 5500 come from 2 brands — DORMAN and WELLS. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.
The Economy section: 1 option from DORMAN. DORMAN 601607 is listed in this group.
Standard Replacement: 1 part, from WELLS. A representative part number is WELLS 1S11775.
Listed part numbers: DORMAN 601607 and WELLS 1S11775.
Dimmer Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2018 5500 engines | CBS1925 | 🇺🇸 US 🇨🇦 CA | 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.
This group shows a single part: STANDARD MOTOR PRODUCTS CBS1925.
Door Lock Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER Fits: all 2018 5500 engines | DWS1993 | 🇺🇸 US 🇨🇦 CA | RightPower Door Lock Switch | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Popular Fits: all 2018 5500 engines | 68148892AB | 🇺🇸 US 🇨🇦 CA | Fits FrontCab Chassis | View on Amazon |
| MOPAR Popular Fits: all 2018 5500 engines | 56046823AE | 🇺🇸 US 🇨🇦 CA | Fits FrontCab Chassis | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: all 2018 5500 engines | DWS1899 | 🇺🇸 US 🇨🇦 CA | Front LeftCab & Chassis - Conventional | View on Amazon |
| MOPAR Fits: all 2018 5500 engines | 68275823AC | 🇺🇸 US 🇨🇦 CA | Fits FrontCab Chassis | View on Amazon |
| MOPAR Fits: all 2018 5500 engines | 68148893AB | 🇺🇸 US 🇨🇦 CA | Fits FrontCab Chassis | View on Amazon |
| ROSTRA Fits: all 2018 5500 engines | 660748 | 🇺🇸 US 🇨🇦 CA | Front Leftwith Power Folding Mirrors | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2018 5500 engines | DWS1994 | 🇺🇸 US 🇨🇦 CA | RightCab & Chassis - Conventional | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2018 5500 engines | DWS1993 | 🇺🇸 US 🇨🇦 CA | Attachment Method: Push On | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2018 5500 engines | DWS1897 | 🇺🇸 US 🇨🇦 CA | Front LeftCab & Chassis - Crew Cab | View on Amazon |
| WELLS Fits: all 2018 5500 engines | 1S14283 | 🇺🇸 US 🇨🇦 CA | Front Leftwith One-Touch Open/Close Windows | 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.
11 Door Lock Switch parts are listed for the 2018 Ram 5500, from MOPAR, STANDARD MOTOR PRODUCTS, ULTRA-POWER and 2 other brands. MOPAR 68148892AB carries the "Popular" badge. All of them fit every engine offered in the 2018 5500.
Economy: 1 part, from ULTRA-POWER. A representative part number is ULTRA-POWER DWS1993.
The Standard Replacement section: 10 options from MOPAR, STANDARD MOTOR PRODUCTS, ROSTRA and 1 other brand. MOPAR 68148892AB is listed in this group.
Glove Box Lamp Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: all 2018 5500 engines | 4565022 | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisGlove Box Lamp | View on Amazon |
| ROSTRA Fits: all 2018 5500 engines | 651381 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: all 2018 5500 engines | 1S2892 | 🇺🇸 US 🇨🇦 CA | 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 for the 2018 Ram 5500 come from 3 brands — MOPAR, ROSTRA and WELLS. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.
Part numbers include MOPAR 4565022, ROSTRA 651381 and WELLS 1S2892.
Headlamp Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AUTOTECNICA Fits: all 2018 5500 engines | RM1320829 | 🇺🇸 US 🇨🇦 CA | Fog Lamps | View on Amazon |
| ULTRA-POWER Fits: all 2018 5500 engines | HLS1734 | 🇺🇸 US 🇨🇦 CA | without Cargo Area Lightwith Fog Lights | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Popular Fits: all 2018 5500 engines | 68269910AA | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisAutomatic Headlamps, Cargo Lamp | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: all 2018 5500 engines | HLS1685 | 🇺🇸 US 🇨🇦 CA | with Fog Lightswith Cargo Area Light | View on Amazon |
| ROSTRA Fits: all 2018 5500 engines | 651216 | 🇺🇸 US 🇨🇦 CA | with Automatic Headlightswithout Fog Lights | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2018 5500 engines | HLS1734 | 🇺🇸 US 🇨🇦 CA | without Cargo Area Lightwith Fog Lights | 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.
6 Headlamp Switch parts for the 2018 Ram 5500 come from 5 brands — STANDARD MOTOR PRODUCTS, AUTOTECNICA, ULTRA-POWER and 2 other brands. The "Popular" part is MOPAR 68269910AA. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.
The Economy section: 2 options from AUTOTECNICA and ULTRA-POWER. AUTOTECNICA RM1320829 is listed in this group.
Standard Replacement: 4 parts, from STANDARD MOTOR PRODUCTS, MOPAR and ROSTRA. A representative part number is MOPAR 68269910AA.
This group includes MOPAR 68269910AA, AUTOTECNICA RM1320829 and ULTRA-POWER HLS1734 and the remaining parts above.
HVAC Control Switch / Panel
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Popular Fits: all 2018 5500 engines | 68268188AA | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisA/C | View on Amazon |
| MOPAR Fits: all 2018 5500 engines | 68268191AA | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisA/C, Ambulance Prep Group | View on Amazon |
| MOPAR Fits: all 2018 5500 engines | 68268190AA | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisA/C, Ambulance Prep Group | View on Amazon |
| MOPAR Fits: all 2018 5500 engines | 1UJ97DX9AK | 🇺🇸 US 🇨🇦 CA | Upper | View on Amazon |
| MOPAR Fits: all 2018 5500 engines | 68268189AA | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisA/C | View on Amazon |
This table covers the HVAC Control Switch panels.
5 HVAC Control Switch / Panel parts for the 2018 Ram 5500 come from MOPAR. The "Popular" part is MOPAR 68268188AA. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.
Part numbers include MOPAR 68268188AA, MOPAR 68268191AA and MOPAR 68268190AA, among others listed above.
Ignition Starter Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: all 2018 5500 engines | 601086 | 🇺🇸 US 🇨🇦 CA | Requires Pin From Original Mfg For Proper Programming | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Popular Fits: all 2018 5500 engines | 68271986AC | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisExcept Pushbutton Start | View on Amazon |
| MOPAR Fits: all 2018 5500 engines | 6CK46DX9AC | 🇺🇸 US 🇨🇦 CA | PUSH BUTTON | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2018 5500 engines | US1292 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: all 2018 5500 engines | 1S16362 | 🇺🇸 US 🇨🇦 CA | 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.
5 Ignition Starter Switch parts for the 2018 Ram 5500 come from 4 brands — MOPAR, DORMAN, STANDARD MOTOR PRODUCTS and 1 other brand. The "Popular" part is MOPAR 68271986AC. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.
The Economy section: 1 option from DORMAN. DORMAN 601086 is listed in this group.
Standard Replacement: 4 parts, from MOPAR, STANDARD MOTOR PRODUCTS and WELLS. A representative part number is MOPAR 68271986AC.
Part numbers include MOPAR 68271986AC, DORMAN 601086 and MOPAR 6CK46DX9AC, among others listed above.
Instrument Cluster Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Popular Fits: all 2018 5500 engines | 68231814AD | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisElectronic Stability Control, Black Switches, Diesel Exhaust Brake | View on Amazon |
| MOPAR Fits: all 2018 5500 engines | 68231813AD | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisElectronic Stability Control, Black Switches, Diesel Exhaust Brake | View on Amazon |
| MOPAR Fits: all 2018 5500 engines | 68231817AD | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisElectronic Stability Control, Power Take Off Prep - Left Side, Black Switches, Diesel Exhaust Brake | View on Amazon |
| MOPAR Fits: all 2018 5500 engines | 68231818AD | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisElectronic Stability Control, Power Take Off Prep - Left Side, Black Switches, Diesel Exhaust Brake | View on Amazon |
| MOPAR Fits: all 2018 5500 engines | 68231819AD | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisElectronic Stability Control, Black Switches | View on Amazon |
| MOPAR Fits: all 2018 5500 engines | 68231821AD | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisElectronic Stability Control, Black Switches, Power Take Off Prep - Left Side | 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.
MOPAR supplies the 6 Instrument Cluster Switch parts for the 2018 Ram 5500. MOPAR 68231814AD carries the "Popular" badge. All of them fit every engine offered in the 2018 5500.
This group includes MOPAR 68231814AD, MOPAR 68231813AD and MOPAR 68231817AD and the remaining parts above.
Instrument Panel Dimmer Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA Fits: all 2018 5500 engines | 651216 | 🇺🇸 US 🇨🇦 CA | with Automatic Headlightswithout Fog Lights | View on Amazon |
| WELLS Fits: all 2018 5500 engines | 1S13323 | 🇺🇸 US 🇨🇦 CA | Functions: Headlight, Auto Headlight, Parking 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.
2 Instrument Panel Dimmer Switch parts are listed for the 2018 Ram 5500, from ROSTRA and WELLS. All of them fit every engine offered in the 2018 5500.
Listed part numbers: ROSTRA 651216 and WELLS 1S13323.
Intake Manifold Heater Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 6.7L L6 DIESEL Turbocharged | 1R2398 | 🇺🇸 US 🇨🇦 CA | Cover Material: Plastic, Metal | View on Amazon |
This table covers the relays that control the Intake Manifold Heater 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: WELLS 1R2398.
Multi-Function Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: all 2018 5500 engines | 1R1061 | 🇺🇸 US 🇨🇦 CA | Amperage Rating: 40 AConnector Gender: Male | View on Amazon |
| WELLS Fits: all 2018 5500 engines | 1R2407 | 🇺🇸 US 🇨🇦 CA | Mounting Hardware Included: No | View on Amazon |
| WELLS Fits: all 2018 5500 engines | 1R2491 | 🇺🇸 US 🇨🇦 CA | 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.
WELLS supplies the 3 Multi-Function Relay parts for the 2018 Ram 5500. All of them fit every engine offered in the 2018 5500.
Listed part numbers: WELLS 1R1061, WELLS 1R2407 and WELLS 1R2491.
Neutral Safety Switch / Range Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: all 2018 5500 engines | 68224233AA | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisPower Take Off Prep - Left Side | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2018 5500 engines | NS744 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: all 2018 5500 engines | 1S16355 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Neutral Safety Switch / Range sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors.
3 Neutral Safety Switch / Range Sensor parts are listed for the 2018 Ram 5500, from MOPAR, STANDARD MOTOR PRODUCTS and WELLS. All of them fit every engine offered in the 2018 5500.
Part numbers include MOPAR 68224233AA, STANDARD MOTOR PRODUCTS NS744 and WELLS 1S16355.
Oil Pressure Sender / Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular Fits: 6.4L V8 | 926337 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| UNITED MOTOR PRODUCTS Fits: 6.4L V8 | OPS348 | 🇺🇸 US 🇨🇦 CA | with Gauge | View on Amazon |
| WALKER PRODUCTS Fits: 6.4L V8 | 2561030 | 🇺🇸 US 🇨🇦 CA | Connector Gender: Female | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Popular Fits: 6.4L V8 | 1S14330 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MOPAR Fits: 6.4L V8 | 68019700AA | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisPower Take Off Prep - Left Side | View on Amazon |
| ROSTRA Fits: 6.4L V8 | 501563 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 6.4L V8 | PS674 | 🇺🇸 US 🇨🇦 CA | Terminal Type: Blade | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 68019700AA | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisCummins Engine | 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.
8 Oil Pressure Sender / Switch parts are listed for the 2018 Ram 5500, from MOPAR, DORMAN, UNITED MOTOR PRODUCTS and 4 other brands. DORMAN 926337 carries the "Popular" badge.
Economy: 3 parts, from DORMAN, UNITED MOTOR PRODUCTS and WALKER PRODUCTS. A representative part number is DORMAN 926337.
The Standard Replacement section: 4 options from WELLS, MOPAR, ROSTRA and 1 other brand. WELLS 1S14330 is listed in this group.
1 ungrouped part is not assigned to a grade, with the same engine-level match.
Listed part numbers: DORMAN 926337, UNITED MOTOR PRODUCTS OPS348 and WALKER PRODUCTS 2561030, plus the other parts above.
Outside Mirror Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER Fits: all 2018 5500 engines | DWS1897 | 🇺🇸 US 🇨🇦 CA | Remotewithout Power Folding Mirror Switch | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2018 5500 engines | DWS1899 | 🇺🇸 US 🇨🇦 CA | Cab & Chassis - Conventionalwithout Power Folding Mirrors | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2018 5500 engines | DWS1897 | 🇺🇸 US 🇨🇦 CA | Cab & Chassis - Crew Cabwithout 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.
3 Outside Mirror Switch parts for the 2018 Ram 5500 come from 2 brands — STANDARD MOTOR PRODUCTS and ULTRA-POWER. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.
The Economy section: 1 option from ULTRA-POWER. ULTRA-POWER DWS1897 is listed in this group.
Standard Replacement: 2 parts, from STANDARD MOTOR PRODUCTS. A representative part number is STANDARD MOTOR PRODUCTS DWS1899.
Listed part numbers: ULTRA-POWER DWS1897 and STANDARD MOTOR PRODUCTS DWS1899, plus the other parts above.
Parking Brake Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: all 2018 5500 engines | 4221463 | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisRegular Cab Chassis Wheelbase 1or Cab Chassis | 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.
One part is listed for the 2018 Ram 5500 — MOPAR 4221463.
Power Seat Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: all 2018 5500 engines | 901477 | 🇺🇸 US 🇨🇦 CA | Front Left8 Way | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2018 5500 engines | PMS12 | 🇺🇸 US 🇨🇦 CA | Adjusts Seat Memory Function | View on Amazon |
| WELLS Fits: all 2018 5500 engines | 1S17150 | 🇺🇸 US 🇨🇦 CA | Adjusts Seat Memory Function | View on Amazon |
| WELLS Fits: all 2018 5500 engines | 1S16027 | 🇺🇸 US 🇨🇦 CA | Lumbar Switch | 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.
4 Power Seat Switch parts for the 2018 Ram 5500 come from 3 brands — WELLS, DORMAN and STANDARD MOTOR PRODUCTS. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.
The Economy section: 1 option from DORMAN. DORMAN 901477 is listed in this group.
Standard Replacement: 3 parts, from WELLS and STANDARD MOTOR PRODUCTS. A representative part number is STANDARD MOTOR PRODUCTS PMS12.
Listed part numbers: DORMAN 901477, STANDARD MOTOR PRODUCTS PMS12 and WELLS 1S17150, plus the other parts above.
Power Window Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular Fits: all 2018 5500 engines | 920541 | 🇺🇸 US 🇨🇦 CA | Front RightCab & Chassis - Crew Cab | View on Amazon |
| DORMAN Popular Fits: all 2018 5500 engines | 901989 | 🇺🇸 US 🇨🇦 CA | Front LeftCab & Chassis - Crew Cab | View on Amazon |
| DORMAN Fits: all 2018 5500 engines | 920508 | 🇺🇸 US 🇨🇦 CA | Fits Rear Right | View on Amazon |
| SKP Fits: all 2018 5500 engines | SKDWS1899 | 🇺🇸 US 🇨🇦 CA | Front Left | View on Amazon |
| ULTRA-POWER Fits: all 2018 5500 engines | DWS1993 | 🇺🇸 US 🇨🇦 CA | Front RightCab & Chassis or Crew Cab Pickup | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: all 2018 5500 engines | DWS1994 | 🇺🇸 US 🇨🇦 CA | Front Right | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: all 2018 5500 engines | DWS1899 | 🇺🇸 US 🇨🇦 CA | Front LeftCab & Chassis - Conventional | View on Amazon |
| MOPAR Fits: all 2018 5500 engines | 56046832AC | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisPower Front Windows, 1-Touch Up & Down | View on Amazon |
| ROSTRA Fits: all 2018 5500 engines | 660175 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| ROSTRA Fits: all 2018 5500 engines | 660748 | 🇺🇸 US 🇨🇦 CA | Front Leftwith Power Folding Mirrors | View on Amazon |
| ROSTRA Fits: all 2018 5500 engines | 660169 | 🇺🇸 US 🇨🇦 CA | Front Leftwith One Touch Auto Windows | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2018 5500 engines | DWS1649 | 🇺🇸 US 🇨🇦 CA | Rearwithout One Touch Window Open/Close | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2018 5500 engines | DWS1993 | 🇺🇸 US 🇨🇦 CA | Attachment Method: Push On | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2018 5500 engines | DWS1897 | 🇺🇸 US 🇨🇦 CA | Front LeftCab & Chassis - Crew Cab | View on Amazon |
| WELLS Fits: all 2018 5500 engines | 1S12999 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| WELLS Fits: all 2018 5500 engines | 1S15516 | 🇺🇸 US 🇨🇦 CA | Front Rightwithout One-Touch Open Windows | View on Amazon |
| WELLS Fits: all 2018 5500 engines | 1S14282 | 🇺🇸 US 🇨🇦 CA | Front Leftwith One-Touch Open/Close Windows | View on Amazon |
| WELLS Fits: all 2018 5500 engines | 1S14283 | 🇺🇸 US 🇨🇦 CA | Front Leftwith One-Touch Open/Close Windows | 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.
18 Power Window Switch parts are listed for the 2018 Ram 5500, from STANDARD MOTOR PRODUCTS, WELLS, DORMAN and 4 other brands. DORMAN 920541 carries the "Popular" badge. All of them fit every engine offered in the 2018 5500.
Economy: 5 parts, from DORMAN, SKP and ULTRA-POWER. A representative part number is DORMAN 920541.
The Standard Replacement section: 13 options from STANDARD MOTOR PRODUCTS, WELLS, ROSTRA and 1 other brand. STANDARD MOTOR PRODUCTS DWS1994 is listed in this group.
Seat Heater Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: all 2018 5500 engines | HSS124 | 🇺🇸 US 🇨🇦 CA | Rear Left | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: all 2018 5500 engines | HSS120 | 🇺🇸 US 🇨🇦 CA | Rear Right | View on Amazon |
| MOPAR Fits: all 2018 5500 engines | 68059873AC | 🇺🇸 US 🇨🇦 CA | Fits RightCab Chassis | View on Amazon |
| MOPAR Fits: all 2018 5500 engines | 68059874AC | 🇺🇸 US 🇨🇦 CA | Fits LeftCab Chassis | View on Amazon |
| WELLS Fits: all 2018 5500 engines | 1S17438 | 🇺🇸 US 🇨🇦 CA | Rear Left | View on Amazon |
| WELLS Fits: all 2018 5500 engines | 1S17439 | 🇺🇸 US 🇨🇦 CA | 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.
6 Seat Heater Switch parts for the 2018 Ram 5500 come from 3 brands — STANDARD MOTOR PRODUCTS, MOPAR and WELLS. The "Popular" part is STANDARD MOTOR PRODUCTS HSS124. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.
Part numbers include STANDARD MOTOR PRODUCTS HSS124, STANDARD MOTOR PRODUCTS HSS120 and MOPAR 68059873AC, among others listed above.
Seat Lumbar Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2018 5500 engines | PSW165 | 🇺🇸 US 🇨🇦 CA | 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.
This group shows a single part: STANDARD MOTOR PRODUCTS PSW165.
Steering Wheel Audio Control Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: all 2018 5500 engines | 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.
One part is listed for the 2018 Ram 5500 — MOPAR 56054450AA.
Trailer Brake Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SHEE-MAR Popular Fits: all 2018 5500 engines | SM1902 | 🇺🇸 US 🇨🇦 CA | Cab & Chassis - Crew Cabwith Trailer Tow Relay | View on Amazon |
| AUTOTECNICA Fits: all 2018 5500 engines | RM0222121 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| DORMAN Fits: all 2018 5500 engines | 601235 | 🇺🇸 US 🇨🇦 CA | Switch Only | View on Amazon |
| MOPAR Fits: all 2018 5500 engines | 68288760AC | 🇺🇸 US 🇨🇦 CA | Trailer Tow Module | View on Amazon |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 82215040AB | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 82215040AC | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SKP Fits: all 2018 5500 engines | SK959A01 | 🇺🇸 US 🇨🇦 CA | Switch Only | 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.
7 Trailer Brake Switch parts for the 2018 Ram 5500 come from 5 brands — MOPAR, SHEE-MAR, AUTOTECNICA and 2 other brands. The "Popular" part is SHEE-MAR SM1902. 5 parts fit every engine; the other 2 are engine-specific.
Listed part numbers: SHEE-MAR SM1902, AUTOTECNICA RM0222121 and DORMAN 601235, plus the other parts above.
Transmission-Automatic Fluid Pressure Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FAMOUS BRAND Fits: all 2018 5500 engines | SBA2005 | 🇺🇸 US 🇨🇦 CA | Automatic Transmission Oil Pressure SwitchAisin Trans | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: all 2018 5500 engines | 1S16124 | 🇺🇸 US 🇨🇦 CA | Aisin trans. | 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.
2 Transmission-Automatic Fluid Pressure Switch parts are listed for the 2018 Ram 5500, from FAMOUS BRAND and WELLS. All of them fit every engine offered in the 2018 5500.
Economy: 1 part, from FAMOUS BRAND. A representative part number is FAMOUS BRAND SBA2005.
The Standard Replacement section: 1 option from WELLS. WELLS 1S16124 is listed in this group.
Part numbers include FAMOUS BRAND SBA2005 and WELLS 1S16124.
Turn Signal Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: all 2018 5500 engines | 901279 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2018 5500 engines | CBS1925 | 🇺🇸 US 🇨🇦 CA | 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.
2 Turn Signal Switch parts are listed for the 2018 Ram 5500, from DORMAN and STANDARD MOTOR PRODUCTS. All of them fit every engine offered in the 2018 5500.
Economy: 1 part, from DORMAN. A representative part number is DORMAN 901279.
The Standard Replacement section: 1 option from STANDARD MOTOR PRODUCTS. STANDARD MOTOR PRODUCTS CBS1925 is listed in this group.
This group includes DORMAN 901279 and STANDARD MOTOR PRODUCTS CBS1925.
Wiper / Washer Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2018 5500 engines | CBS1925 | 🇺🇸 US 🇨🇦 CA | 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.
This group shows a single part: STANDARD MOTOR PRODUCTS CBS1925.
Buying Electrical Switch & Relay Parts for a 2018 Ram 5500
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. Some electrical switch & relay parts fit every engine; others are 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 5500?
Our catalog currently lists 112 electrical switch & relay parts for the 2018 Ram 5500 across 29 subcategories and 14 brands, covering both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged. Each part is matched to the engine(s) it fits.
Do electrical switch & relay parts differ between 2018 Ram 5500 engines?
Some do. 100 parts fit every engine; the other 12 are engine-specific. Each row (and the filter at the top) shows which. 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 5500?
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 5500 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 5500?
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 5500
Electrical Switch & Relay Parts for Other Ram 5500 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.