135 Electrical switch & relay parts are listed for the 2012 Ram 4500, in 34 part types, covering the 6.7L L6 DIESEL Turbocharged engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2012 Ram 4500, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches. 35 parts of the 135 listed are Brake Light Switch (12 parts), Power Seat Switch (12 parts) and Headlamp Switch (11 parts). The other 31 part types cover the remaining 100 parts.
Every part on this page is matched to the 6.7L L6 DIESEL Turbocharged — the only engine offered in the 2012 Ram 4500.
The most listed brands for 2012 Ram 4500 electrical switch & relay parts are MOPAR (36 parts), WELLS (33 parts) and STANDARD MOTOR PRODUCTS (27 parts), plus 11 more brands. Quality grades include Standard Replacement and Economy.
20 parts on this 2012 Ram 4500 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including MOPAR 56038914AA (Brake Light Switch) and MOPAR 4602863AD (Door Lock Switch). Click any part number to see every vehicle that part fits.
4WD Indicator Light Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 600555 | 🇺🇸 US 🇨🇦 CA | 271 Series Transfer CaseBW 44-47 Series Transfer Case | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | TCA64 | 🇺🇸 US 🇨🇦 CA | On Transfer Case | View on Amazon |
| WELLS | 1S4129 | 🇺🇸 US 🇨🇦 CA | with Manual Shift-On-The-Fly Transfer Case | 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.
3 4WD Indicator Light Switch parts are listed for the 2012 Ram 4500, from DORMAN, STANDARD MOTOR PRODUCTS and WELLS.
In the Economy grade, DORMAN supplies 1 part: the catalog's value-priced group. A representative part number is DORMAN 600555.
The Standard Replacement section lists 2 options from STANDARD MOTOR PRODUCTS and WELLS — built to original-equipment specification. STANDARD MOTOR PRODUCTS TCA64 is listed in this group.
Listed part numbers: DORMAN 600555, STANDARD MOTOR PRODUCTS TCA64 and WELLS 1S4129.
4WD Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR | 4602973AB | 🇺🇸 US 🇨🇦 CA | Fits Elec Shift-On-The-Fly Transfer CaseCrew Cab Wheelbase 4or Elec Shift-On-The-Fly Transfer Case | View on Amazon |
| MOPAR | 5083138AA | 🇺🇸 US 🇨🇦 CA | 5 Position | View on Amazon |
| WELLS | 1S4129 | 🇺🇸 US 🇨🇦 CA | with Manual Shift-On-The-Fly Transfer Case, Located on 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.
3 4WD Switch parts for the 2012 Ram 4500 come from 2 brands — MOPAR and WELLS.
This group includes MOPAR 4602973AB, MOPAR 5083138AA and WELLS 1S4129.
A/C Pressure Safety Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO | V33730052 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the A/C Pressure Safety 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 2012 Ram 4500 — VEMO V33730052.
A/C Refrigerant Pressure Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD | 1711938 | 🇺🇸 US 🇨🇦 CA | Pressure Transducer | View on Amazon |
| UAC | SW10080C | 🇺🇸 US 🇨🇦 CA | Pressure Transducer | View on Amazon |
| WELLS | 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.
3 A/C Refrigerant Pressure Switch parts for the 2012 Ram 4500 come from 3 brands — GPD, UAC and WELLS.
This group includes GPD 1711938, UAC SW10080C and WELLS 1S15798.
A/C Thermo Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD | 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.
One part is listed for the 2012 Ram 4500 — GPD 1713019.
Air Intake Heater Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 904300 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ROSTRA | 600225 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS | RY1779 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS | 1R2398 | 🇺🇸 US 🇨🇦 CA | Cover Material: Plastic, Metal | View on Amazon |
This table covers the relays that control the Air Intake 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.
4 Air Intake Heater Relay parts are listed for the 2012 Ram 4500, from DORMAN, ROSTRA, STANDARD MOTOR PRODUCTS and 1 other brand.
Part numbers include DORMAN 904300, ROSTRA 600225 and STANDARD MOTOR PRODUCTS RY1779, among others listed above.
Back Up / Reverse Lamp Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA | 670117 | 🇺🇸 US 🇨🇦 CA | Manual trans. | View on Amazon |
| WELLS | 1S5003 | 🇺🇸 US 🇨🇦 CA | Manual trans. | 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.
2 Back Up / Reverse Lamp Switch parts for the 2012 Ram 4500 come from 2 brands — ROSTRA and WELLS.
Part numbers include ROSTRA 670117 and WELLS 1S5003.
Brake Light Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 901259 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| FAMOUS BRAND | 58026 | 🇺🇸 US 🇨🇦 CA | Power Take Off | View on Amazon |
| STANDARD MOTOR PRODUCTS | SLS208T | 🇺🇸 US 🇨🇦 CA | T-Series | View on Amazon |
| VEMO | V33730001 | 🇺🇸 US 🇨🇦 CA | Plug (Connector): 6 Pins | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Popular | 56038914AA | 🇺🇸 US 🇨🇦 CA | Fits Regular Cab Chassis Wheelbase 3or Regular Cab Chassis Wheelbase 4or Regular Cab Chassis Wheelbase 1or Regular Cab Chassis Wheelbase 2or Crew Cab Wheelbase 4or Crew Cab197.4" Wheelbase | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular | SLS208 | 🇺🇸 US 🇨🇦 CA | with POWER TAKE OFF | View on Amazon |
| WELLS Popular | 1S4998 | 🇺🇸 US 🇨🇦 CA | Mounting Hardware Included: No | View on Amazon |
| MOPAR | 4671336AD | 🇺🇸 US 🇨🇦 CA | Fits Cummins Engine.Power Take Off Preparation | View on Amazon |
| ROSTRA | 620007 | 🇺🇸 US 🇨🇦 CA | Connector Shape: Rectangular | View on Amazon |
| ROSTRA | 620033 | 🇺🇸 US 🇨🇦 CA | Connector Shape: Rectangular | View on Amazon |
| STANDARD MOTOR PRODUCTS | SLS513 | 🇺🇸 US 🇨🇦 CA | without Power Take Off | View on Amazon |
| WELLS | 1S11820 | 🇺🇸 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.
12 Brake Light Switch parts for the 2012 Ram 4500 come from 7 brands — STANDARD MOTOR PRODUCTS, MOPAR, WELLS and 4 other brands. The "Popular" part is MOPAR 56038914AA.
The Economy section: 4 options from DORMAN, FAMOUS BRAND, STANDARD MOTOR PRODUCTS and 1 other brand. DORMAN 901259 is listed in this group.
Standard Replacement: 8 parts, from MOPAR, STANDARD MOTOR PRODUCTS, WELLS and 1 other brand. A representative part number is MOPAR 56038914AA.
Clutch Pedal Position / Starter Safety Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | NS193 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS | 1S4968 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Clutch Pedal Position / Starter Safety 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 Clutch Pedal Position / Starter Safety Switch parts are listed for the 2012 Ram 4500, from STANDARD MOTOR PRODUCTS and WELLS.
This group includes STANDARD MOTOR PRODUCTS NS193 and WELLS 1S4968.
Cruise Control Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR | 56046094AF | 🇺🇸 US 🇨🇦 CA | Fits Leather Wrapped Steering WheelSpeed Control | View on Amazon |
| ROSTRA | 660101 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS | 1S7713 | 🇺🇸 US 🇨🇦 CA | Switch Mounting Type: Bolt On | 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 2012 Ram 4500, from MOPAR, ROSTRA and WELLS.
This group includes MOPAR 56046094AF, ROSTRA 660101 and WELLS 1S7713.
Dimmer Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA | 640046 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS | CBS1925 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS | 1S11313 | 🇺🇸 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.
3 Dimmer Switch parts are listed for the 2012 Ram 4500, from ROSTRA, STANDARD MOTOR PRODUCTS and WELLS.
Part numbers include ROSTRA 640046, STANDARD MOTOR PRODUCTS CBS1925 and WELLS 1S11313.
Door Lock Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Popular | 4602863AD | 🇺🇸 US 🇨🇦 CA | Fits Power Black Trailer Tow Mirrors or Power Chrome Trailer Tow MirrorsPower Locks, Power Front Windows, 1-Touch, up & Down Left | View on Amazon |
| MOPAR | 68021708AD | 🇺🇸 US 🇨🇦 CA | Fits Power Locks, Power Windows, Front 1-Touch Down RightRegular Cab Chassis Wheelbase 1or Power Locks, Power Windows, Front 1-Touch Down Right | View on Amazon |
| MOPAR | 4602870AD | 🇺🇸 US 🇨🇦 CA | Fits Power Locks, Power Front Windows, 1-Touch, up & Down RightCrew Cab Wheelbase 4or Power Locks, Power Front Windows, 1-Touch, up & Down Right | View on Amazon |
| MOPAR | 68091001AB | 🇺🇸 US 🇨🇦 CA | Fits Power Black Trailer Tow MirrorsPower Locks, Power Windows, Front 1-Touch Down Left | View on Amazon |
| MOPAR | 4602881AD | 🇺🇸 US 🇨🇦 CA | Fits Power Black Trailer Tow Mirrors or Power Chrome Trailer Tow MirrorsPower Locks, Power Windows, Front 1-Touch Down Left | 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.
5 Door Lock Switch parts for the 2012 Ram 4500 come from MOPAR. The "Popular" part is MOPAR 4602863AD.
Part numbers include MOPAR 4602863AD, MOPAR 68021708AD and MOPAR 4602870AD, among others listed above.
Fog / Driving Lamp Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER | HLS1685 | 🇺🇸 US 🇨🇦 CA | with Cargo Light | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | HLS1685 | 🇺🇸 US 🇨🇦 CA | with Cargo Area Light | View on Amazon |
| STANDARD MOTOR PRODUCTS | HLS1621 | 🇺🇸 US 🇨🇦 CA | without Cargo Area Light | View on Amazon |
| WELLS | 1S11719 | 🇺🇸 US 🇨🇦 CA | with Automatic Headlightswith Cargo Area Light | 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.
4 Fog / Driving Lamp Switch parts are listed for the 2012 Ram 4500, from STANDARD MOTOR PRODUCTS, ULTRA-POWER and WELLS.
Economy: 1 part, from ULTRA-POWER. A representative part number is ULTRA-POWER HLS1685.
The Standard Replacement section: 3 options from STANDARD MOTOR PRODUCTS and WELLS. STANDARD MOTOR PRODUCTS HLS1685 is listed in this group.
Part numbers include ULTRA-POWER HLS1685 and STANDARD MOTOR PRODUCTS HLS1621, among others listed above.
Glove Box Lamp Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR | 4565022 | 🇺🇸 US 🇨🇦 CA | Fits Glove Box LampCrew Cab | 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.
One part is listed for the 2012 Ram 4500 — MOPAR 4565022.
Headlamp Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP | SKHLS1686 | 🇺🇸 US 🇨🇦 CA | with Cargo Area Lightwithout Fog Lights | View on Amazon |
| SKP | SKHLS1685 | 🇺🇸 US 🇨🇦 CA | with Cargo Area Lightwith Fog Lights | View on Amazon |
| ULTRA-POWER | HLS1686 | 🇺🇸 US 🇨🇦 CA | with Cargo Area Lightwithout Fog Lights | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | HLS1686 | 🇺🇸 US 🇨🇦 CA | without Fog Lightswith Cargo Area Light | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular | HLS1685 | 🇺🇸 US 🇨🇦 CA | with Fog Lightswith Cargo Area Light | View on Amazon |
| WELLS Popular | 1S11719 | 🇺🇸 US 🇨🇦 CA | with Automatic Headlightswith Cargo Area Light | View on Amazon |
| MOPAR | 4602918AA | 🇺🇸 US 🇨🇦 CA | Fits Cargo Lamp, Fog LampsAutomatic Headlamps | View on Amazon |
| STANDARD MOTOR PRODUCTS | HLS1620 | 🇺🇸 US 🇨🇦 CA | without Fog Lightswithout Cargo Area Light | View on Amazon |
| WELLS | 1S11724 | 🇺🇸 US 🇨🇦 CA | with Automatic Headlightswithout Cargo Area Light | View on Amazon |
| WELLS | 1S11723 | 🇺🇸 US 🇨🇦 CA | with Automatic Headlightswithout Cargo Area Light | View on Amazon |
| WELLS | 1S11718 | 🇺🇸 US 🇨🇦 CA | with Automatic Headlightswith Cargo Area Light | 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 2012 Ram 4500, from WELLS, STANDARD MOTOR PRODUCTS, SKP and 2 other brands. STANDARD MOTOR PRODUCTS HLS1686 carries the "Popular" badge.
Economy: 3 parts, from SKP and ULTRA-POWER. A representative part number is SKP SKHLS1686.
The Standard Replacement section: 8 options from WELLS, STANDARD MOTOR PRODUCTS and MOPAR. STANDARD MOTOR PRODUCTS HLS1686 is listed in this group.
Horn Contact Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR | 5057633AG | 🇺🇸 US 🇨🇦 CA | Fits Leather Wrapped Steering WheelSpeed Control | View on Amazon |
This table covers the Horn Contact 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 5057633AG.
Instrument Cluster Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR | 4602878AC | 🇺🇸 US 🇨🇦 CA | Fits Heated Front Seats, Heated Steering WheelExc. Ventilated Front Seats or Instrument Panel Mounted Switch Bank | View on Amazon |
| MOPAR | 4602879AC | 🇺🇸 US 🇨🇦 CA | Fits Heated Front Seats, Heated Steering Wheel, Ventilated Front SeatsExc. Instrument Panel Mounted Switch Bank | View on Amazon |
| MOPAR | 4602943AB | 🇺🇸 US 🇨🇦 CA | Fits DIESEL Exhaust BrakeExc. 115V Auxiliary Power Outlet | View on Amazon |
| MOPAR | 4602951AB | 🇺🇸 US 🇨🇦 CA | Fits 115V Auxiliary Power OutletDIESEL Exhaust Brake | View on Amazon |
| MOPAR | 5164912AC | 🇺🇸 US 🇨🇦 CA | Fits I/P Mounted Switch BankCrew Cab Wheelbase 4or I/P Mounted Switch Bank | 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.
5 Instrument Cluster Switch parts for the 2012 Ram 4500 come from MOPAR.
This group includes MOPAR 4602878AC, MOPAR 4602879AC and MOPAR 4602943AB and the remaining parts above.
Instrument Panel Dimmer Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER | HLS1686 | 🇺🇸 US 🇨🇦 CA | Panel Dimming Switchwith Cargo Area Light | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | HLS1685 | 🇺🇸 US 🇨🇦 CA | with Fog Lightswith Cargo Area Light | View on Amazon |
| WELLS Popular | 1S11719 | 🇺🇸 US 🇨🇦 CA | with Automatic Headlightswith Cargo Area Light | View on Amazon |
| STANDARD MOTOR PRODUCTS | HLS1620 | 🇺🇸 US 🇨🇦 CA | without Fog Lightswithout Cargo Area Light | View on Amazon |
| STANDARD MOTOR PRODUCTS | HLS1686 | 🇺🇸 US 🇨🇦 CA | without Fog Lightswith Cargo Area Light | View on Amazon |
| WELLS | 1S11724 | 🇺🇸 US 🇨🇦 CA | with Automatic Headlights, without Cargo Lights, without Fog Lights | View on Amazon |
| WELLS | 1S11723 | 🇺🇸 US 🇨🇦 CA | with Automatic Headlightswithout Cargo Area Light | View on Amazon |
| WELLS | 1S11718 | 🇺🇸 US 🇨🇦 CA | with Automatic Headlightswith Cargo Area Light | 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.
8 Instrument Panel Dimmer Switch parts for the 2012 Ram 4500 come from 3 brands — WELLS, STANDARD MOTOR PRODUCTS and ULTRA-POWER. The "Popular" part is STANDARD MOTOR PRODUCTS HLS1685.
The Economy section: 1 option from ULTRA-POWER. ULTRA-POWER HLS1686 is listed in this group.
Standard Replacement: 7 parts, from WELLS and STANDARD MOTOR PRODUCTS. A representative part number is STANDARD MOTOR PRODUCTS HLS1685.
This group includes STANDARD MOTOR PRODUCTS HLS1685, ULTRA-POWER HLS1686 and WELLS 1S11719 and the remaining parts above.
Intake Manifold Heater Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA | 600225 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS | 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.
2 Intake Manifold Heater Relay parts are listed for the 2012 Ram 4500, from ROSTRA and WELLS.
This group includes ROSTRA 600225 and WELLS 1R2398.
Micro Plug Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR | 68083380AA | 🇺🇸 US 🇨🇦 CA | MICRO RELAY | 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: MOPAR 68083380AA.
Neutral Safety Switch / Range Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR | 68020005AA | 🇺🇸 US 🇨🇦 CA | Fits Regular Cab Chassis Wheelbase 16 Speed Auto Aisin AS68RC Transmission | View on Amazon |
| WELLS | 1S16121 | 🇺🇸 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.
2 Neutral Safety Switch / Range Sensor parts for the 2012 Ram 4500 come from 2 brands — MOPAR and WELLS.
Listed part numbers: MOPAR 68020005AA and WELLS 1S16121.
Oil Pressure Sender / Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| UNITED MOTOR PRODUCTS | OPS248 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | PS406 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MOPAR | 68019700AA | 🇺🇸 US 🇨🇦 CA | Fits 1/4 inch threadRegular Cab Chassis Wheelbase 1 | View on Amazon |
| ROSTRA | 501307 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS | 1S10852 | 🇺🇸 US 🇨🇦 CA | 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.
5 Oil Pressure Sender / Switch parts for the 2012 Ram 4500 come from 5 brands — UNITED MOTOR PRODUCTS, STANDARD MOTOR PRODUCTS, MOPAR and 2 other brands. The "Popular" part is STANDARD MOTOR PRODUCTS PS406.
The Economy section: 1 option from UNITED MOTOR PRODUCTS. UNITED MOTOR PRODUCTS OPS248 is listed in this group.
Standard Replacement: 4 parts, from STANDARD MOTOR PRODUCTS, MOPAR, ROSTRA and 1 other brand. A representative part number is STANDARD MOTOR PRODUCTS PS406.
Listed part numbers: STANDARD MOTOR PRODUCTS PS406, UNITED MOTOR PRODUCTS OPS248 and MOPAR 68019700AA, plus the other parts above.
Parking Brake Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR | 4221463 | 🇺🇸 US 🇨🇦 CA | Fits Regular Cab Chassis Wheelbase 3or Regular Cab Chassis Wheelbase 4or Regular Cab Chassis Wheelbase 1or Regular Cab Chassis Wheelbase 2or Crew Cab Wheelbase 4or Crew Cab197.4" Wheelbase | 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.
This group shows a single part: MOPAR 4221463.
Power Seat Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Popular | SK901477 | 🇺🇸 US 🇨🇦 CA | Front LeftHigh Current | View on Amazon |
| DORMAN | 901477 | 🇺🇸 US 🇨🇦 CA | Front Left8 Way | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Popular | 56040636AC | 🇺🇸 US 🇨🇦 CA | Fits 4 Way High Current PassengerPower 10-Way Memory Driver 6-Way Passenger Seats | View on Amazon |
| ROSTRA Popular | 660082 | 🇺🇸 US 🇨🇦 CA | Leftwith 10 Terminals | View on Amazon |
| MOPAR | 56049431AF | 🇺🇸 US 🇨🇦 CA | Fits 8 Way Low Current DriverPower 10-Way Memory Driver 6-Way Passenger Seats | View on Amazon |
| STANDARD MOTOR PRODUCTS | PMS12 | 🇺🇸 US 🇨🇦 CA | Adjusts Seat Memory Function | View on Amazon |
| STANDARD MOTOR PRODUCTS | PSW126 | 🇺🇸 US 🇨🇦 CA | Left | View on Amazon |
| WELLS | 1S17150 | 🇺🇸 US 🇨🇦 CA | Adjusts Seat Memory Function | View on Amazon |
| WELLS | 1S16027 | 🇺🇸 US 🇨🇦 CA | Lumbar Switch | View on Amazon |
| WELLS | 1S7843 | 🇺🇸 US 🇨🇦 CA | Front Leftwith 10 Terminals | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR | 56049433AG | 🇺🇸 US 🇨🇦 CA | Fits 8 Way High Current DriverPower 10-Way Driver Seat | View on Amazon |
| MOPAR | 56049431AG | 🇺🇸 US 🇨🇦 CA | Fits 8 Way Low Current DriverPower 10-Way Memory Driver 6-Way Passenger Seats | 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.
12 Power Seat Switch parts are listed for the 2012 Ram 4500, from MOPAR, WELLS, STANDARD MOTOR PRODUCTS and 3 other brands. SKP SK901477 carries the "Popular" badge.
Economy: 2 parts, from SKP and DORMAN. A representative part number is SKP SK901477.
The Standard Replacement section: 8 options from WELLS, MOPAR, STANDARD MOTOR PRODUCTS and 1 other brand. MOPAR 56040636AC is listed in this group.
2 ungrouped parts are not assigned to a grade, with the same engine-level match.
Power Window Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 901473 | 🇺🇸 US 🇨🇦 CA | Front LeftCab & Chassis - Crew Cab | View on Amazon |
| SKP | SK901473 | 🇺🇸 US 🇨🇦 CA | Front LeftCab & Chassis - Crew Cab | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA Popular | 660041 | 🇺🇸 US 🇨🇦 CA | Front Right | View on Amazon |
| WELLS Popular | 1S13399 | 🇺🇸 US 🇨🇦 CA | Front Right | View on Amazon |
| MOPAR | 4602864AC | 🇺🇸 US 🇨🇦 CA | Fits Power Front Windows1-Touch,Up & Down | View on Amazon |
| MOPAR | 68065171AB | 🇺🇸 US 🇨🇦 CA | Fits Power Sun RoofAutomatic Temp Control A/C with Dual Zone Control | View on Amazon |
| STANDARD MOTOR PRODUCTS | DWS1390 | 🇺🇸 US 🇨🇦 CA | Front RightCab & Chassis - Conventional | View on Amazon |
| STANDARD MOTOR PRODUCTS | DWS523 | 🇺🇸 US 🇨🇦 CA | Fits Front RightCab & Chassis - Crew Cab | View on Amazon |
| STANDARD MOTOR PRODUCTS | DWS1386 | 🇺🇸 US 🇨🇦 CA | Front LeftCab & Chassis - Crew Cab | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AUTOTECNICA | DG1323120 | 🇺🇸 US 🇨🇦 CA | Front RightCab & Chassis - Conventional | 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.
10 Power Window Switch parts for the 2012 Ram 4500 come from 7 brands — STANDARD MOTOR PRODUCTS, MOPAR, DORMAN and 4 other brands. The "Popular" part is ROSTRA 660041.
The Economy section: 2 options from DORMAN and SKP. DORMAN 901473 is listed in this group.
Standard Replacement: 7 parts, from STANDARD MOTOR PRODUCTS, MOPAR, ROSTRA and 1 other brand. A representative part number is ROSTRA 660041.
1 further part sits outside the graded sections, with the same engine-level match.
Radio Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR | 56046098AD | 🇺🇸 US 🇨🇦 CA | Fits RightLeather Wrapped Steering Wheel | View on Amazon |
| MOPAR | 56046099AD | 🇺🇸 US 🇨🇦 CA | Fits LeftLeather Wrapped Steering Wheel | View on Amazon |
This table covers the Radio 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 Radio Switch parts for the 2012 Ram 4500 come from MOPAR.
Part numbers include MOPAR 56046098AD and MOPAR 56046099AD.
Seat Heater Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | HSS125 | 🇺🇸 US 🇨🇦 CA | Rear Right | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular | HSS122 | 🇺🇸 US 🇨🇦 CA | Rear Left | View on Amazon |
| MOPAR | 4602872AB | 🇺🇸 US 🇨🇦 CA | Fits Rear LeftHeated Second Row Seats | View on Amazon |
| MOPAR | 4602970AB | 🇺🇸 US 🇨🇦 CA | Fits Rear RightHeated Second Row Seats | View on Amazon |
| WELLS | 1S17472 | 🇺🇸 US 🇨🇦 CA | Rear Right | View on Amazon |
| WELLS | 1S17473 | 🇺🇸 US 🇨🇦 CA | Rear Left | 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 are listed for the 2012 Ram 4500, from STANDARD MOTOR PRODUCTS, MOPAR and WELLS. STANDARD MOTOR PRODUCTS HSS125 carries the "Popular" badge.
Listed part numbers: STANDARD MOTOR PRODUCTS HSS125, STANDARD MOTOR PRODUCTS HSS122 and MOPAR 4602872AB, plus the other parts above.
Seat Lumbar Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR | 68157564AA | 🇺🇸 US 🇨🇦 CA | Fits Power 10-Way Memory Driver 6-Way Passenger SeatsHeated Front Seats | View on Amazon |
| STANDARD MOTOR PRODUCTS | PSW165 | 🇺🇸 US 🇨🇦 CA | 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.
2 Seat Lumbar Switch parts are listed for the 2012 Ram 4500, from MOPAR and STANDARD MOTOR PRODUCTS.
This group includes MOPAR 68157564AA and STANDARD MOTOR PRODUCTS PSW165.
Starter Motor Control Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA | 600060 | 🇺🇸 US 🇨🇦 CA | Amperage Rating: 30 Ampere | View on Amazon |
| STANDARD MOTOR PRODUCTS | RY1757 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS | 1R2490 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the relays that control the Starter Motor Control 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 Starter Motor Control Relay parts are listed for the 2012 Ram 4500, from ROSTRA, STANDARD MOTOR PRODUCTS and WELLS.
This group includes ROSTRA 600060, STANDARD MOTOR PRODUCTS RY1757 and WELLS 1R2490.
Steering Wheel Audio Control Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR | 56046375AC | 🇺🇸 US 🇨🇦 CA | EvicSteering Wheel | View on Amazon |
| MOPAR | 56046097AD | 🇺🇸 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.
2 Steering Wheel Audio Control Switch parts for the 2012 Ram 4500 come from MOPAR.
Listed part numbers: MOPAR 56046375AC and MOPAR 56046097AD.
Transmission-Automatic Clutch Pressure Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ATP | TE32 | 🇺🇸 US 🇨🇦 CA | Automatic trans. | View on Amazon |
| ATP | TE33 | 🇺🇸 US 🇨🇦 CA | Automatic trans. | View on Amazon |
This table covers the Transmission-Automatic Clutch 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.
ATP supplies both parts for the 2012 Ram 4500.
Transmission-Automatic Fluid Pressure Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FAMOUS BRAND | SBA2005 | 🇺🇸 US 🇨🇦 CA | Automatic Transmission Oil Pressure Switch1/4" Thread Size | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA Popular | 501169 | 🇺🇸 US 🇨🇦 CA | Automatic trans.PS1, PS2 & PS7 | View on Amazon |
| WELLS Popular | 1S16124 | 🇺🇸 US 🇨🇦 CA | Aisin trans.1/4 IN Thread Size | View on Amazon |
| ROSTRA | 501168 | 🇺🇸 US 🇨🇦 CA | Automatic trans.PS3, PS4, PS5, PS6 | View on Amazon |
| STANDARD MOTOR PRODUCTS | PS679 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS | 1S16128 | 🇺🇸 US 🇨🇦 CA | Aisin trans.1/8 IN Thread Size | 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.
6 Transmission-Automatic Fluid Pressure Switch parts for the 2012 Ram 4500 come from 4 brands — ROSTRA, WELLS, FAMOUS BRAND and 1 other brand. The "Popular" part is ROSTRA 501169.
The Economy section: 1 option from FAMOUS BRAND. FAMOUS BRAND SBA2005 is listed in this group.
Standard Replacement: 5 parts, from ROSTRA, WELLS and STANDARD MOTOR PRODUCTS. A representative part number is ROSTRA 501169.
This group includes ROSTRA 501169, FAMOUS BRAND SBA2005 and WELLS 1S16124 and the remaining parts above.
Turn Signal Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 901279 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Popular | 1S11313 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MOPAR | 56046114AF | 🇺🇸 US 🇨🇦 CA | Fits Non Adjustable PedalsHeated Steering Wheel | View on Amazon |
| ROSTRA | 640046 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS | 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.
5 Turn Signal Switch parts for the 2012 Ram 4500 come from 5 brands — DORMAN, WELLS, MOPAR and 2 other brands. The "Popular" part is WELLS 1S11313.
The Economy section: 1 option from DORMAN. DORMAN 901279 is listed in this group.
Standard Replacement: 4 parts, from WELLS, MOPAR, ROSTRA and 1 other brand. A representative part number is WELLS 1S11313.
Listed part numbers: WELLS 1S11313, DORMAN 901279 and MOPAR 56046114AF, plus the other parts above.
Wiper / Washer Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA | 640046 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS | 1S11313 | 🇺🇸 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.
2 Wiper / Washer Switch parts are listed for the 2012 Ram 4500, from ROSTRA and WELLS.
Listed part numbers: ROSTRA 640046 and WELLS 1S11313.
Buying Electrical Switch & Relay Parts for a 2012 Ram 4500
On this vehicle, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches.
- Confirm you have the 6.7L L6 DIESEL Turbocharged engine — every part on this page is matched to it.
- 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: Brake Light Switch and Power Seat Switch .
Frequently Asked Questions
How many electrical switch & relay parts fit the 2012 Ram 4500?
Our catalog currently lists 135 electrical switch & relay parts for the 2012 Ram 4500 across 34 subcategories and 14 brands, covering the 6.7L L6 DIESEL Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical switch & relay problems on a 2012 Ram 4500?
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 2012 Ram 4500 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 2012 Ram 4500?
Every part on this page is matched to the 6.7L L6 DIESEL Turbocharged engine. 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 2012 Ram 4500
Electrical Switch & Relay Parts for Other Ram 4500 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.