2012 Ram 3500 Electrical Parts

This table covers the alternators that charge the battery and run the electrical load. Typical signs include dim lights at idle, a battery lamp, or a growl from the charging pulley. Load-test the battery and inspect the belt and grounds — a bad ground mimics a failed alternator. Read more

61 Alternator / Generator parts are listed for the 2012 Ram 3500, from REMY, TERREPOWER, PURE ENERGY and 9 other brands. TYC 211299 carries the "Popular" badge. Grades run from New through Remanufactured; Remanufactured is the most populated section, led by REMY, TERREPOWER, ACDELCO and 6 other brands.

This table covers the pulleys on the alternator shaft. Typical signs include a growl or chirp that follows engine speed, or a pulley that will not spin freely by hand. Spin each pulley with the belt off. Roughness or play means replace it with the belt. Read more

4 Alternator / Generator Pulley parts for the 2012 Ram 3500 come from 4 brands — CONTINENTAL, DORMAN, INA and 1 other brand.

Part numbers include CONTINENTAL 49980, DORMAN 300435 and INA EA0262, among others listed above.

This table covers the batteries listed by group size and specification. Typical signs include slow cranking, a battery lamp, or a no-start after the vehicle sat overnight. Confirm group size and terminal layout in the notes. Clean the posts and the ground before condemning the battery. Read more

8 Battery parts for the 2012 Ram 3500 come from 8 brands — DEKA, FVP, ACDELCO and 5 other brands. The "Popular" part is DEKA 9A94R. Every part fits both the 5.7L V8 and the 6.7L L6 DIESEL Turbocharged.

In the AGM (Extended Life) grade, DEKA, FVP, ACDELCO and 4 other brands supply 7 parts: grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. A representative part number is DEKA 9A94R.

In the Performance AGM (Extended Life + Increased Power) grade, FULLRIVER supplies 1 part: grouped under the catalog's "Performance AGM (Extended Life + Increased Power)" designation — the notes column spells out what sets them apart. A representative part number is FULLRIVER FT85094R.

Listed part numbers: DEKA 9A94R, FVP P94RAGM and ACDELCO 94RAGM, plus the other parts above.

This table covers the positive and ground cables that run from the battery. Typical signs include a stretched or frayed cable, or a control that no longer reaches the end of its travel. Route the new cable through the same clips. A kinked cable binds and fails early. Read more

MOPAR supplies the 6 Battery Cable parts for the 2012 Ram 3500.

Part numbers include MOPAR 5059001AC, MOPAR 5064814AB and MOPAR 5148506AC, among others listed above.

This table covers the Battery Heat shields. Typical signs include a bent shield rubbing a rotor, or rust-through that leaves the backing open. A rubbing shield will eat a new rotor. Straighten or replace it before the wheel goes back on. Read more

One part is listed for the 2012 Ram 3500 — MOPAR 5033395AC.

This table covers the trays the battery sits in. Read more

This group shows a single part: MOPAR 55372563AB.

This table covers the resettable circuit breakers in this vehicle's electrical system. Read more

This group shows a single part: MOPAR 4692143AA.

This table covers the Door control modules. Read more

2 Door Control Module parts for the 2012 Ram 3500 come from MOPAR. Every part fits both the 5.7L V8 and the 6.7L L6 DIESEL Turbocharged.

This group includes MOPAR 4602911AK and MOPAR 4602910AK.

This table covers the engine-control modules that run fuel, spark and emissions. Read more

One part is listed for the 2012 Ram 3500 — DORMAN 318083.

This table covers the replacement fuses for this vehicle's fuse boxes. Typical signs include one circuit dead while its neighbor still works, or a fuse that blows again as soon as you replace it. Match amperage and fuse type. A repeat blow means a short — find it before the next fuse. Read more

5 Fuse parts for the 2012 Ram 3500 come from 2 brands — MOPAR and BUSSMANN. The "Popular" part is BUSSMANN ATM2. Every part fits both the 5.7L V8 and the 6.7L L6 DIESEL Turbocharged.

In the 10 Amp grade, MOPAR supplies 1 part: grouped under the catalog's "10 Amp" designation — the notes column spells out what sets them apart. A representative part number is MOPAR 6101486.

The 15 Amp section lists 1 option from MOPAR — grouped under the catalog's "15 Amp" designation — the notes column spells out what sets them apart. MOPAR 6101487 is listed in this group.

The 2 Amp section lists 1 option from BUSSMANN — grouped under the catalog's "2 Amp" designation — the notes column spells out what sets them apart. BUSSMANN ATM2 is listed in this group.

The 20 Amp section lists 1 option from MOPAR — grouped under the catalog's "20 Amp" designation — the notes column spells out what sets them apart. MOPAR 6101488 is listed in this group.

In the 25 Amp grade, MOPAR supplies 1 part: grouped under the catalog's "25 Amp" designation — the notes column spells out what sets them apart. A representative part number is MOPAR 4687835.

Part numbers include BUSSMANN ATM2, MOPAR 6101486 and MOPAR 6101487, among others listed above.

This table covers the holders that carry a fuse. Read more

This group shows a single part: MOPAR 68083377AA.

This table covers the horns mounted in the front of the vehicle. Read more

15 Horn parts for the 2012 Ram 3500 come from 3 brands — FIAMM, DORMAN and MOPAR. The "Popular" part is FIAMM 7210223. 14 parts fit every engine; the other 1 is engine-specific.

The Accessory Replacement section lists 7 options from FIAMM — grouped under the catalog's "Accessory Replacement" designation — the notes column spells out what sets them apart. FIAMM 7210223 is listed in this group.

In the Standard Replacement grade, FIAMM, DORMAN and MOPAR supply 8 parts: built to original-equipment specification. A representative part number is FIAMM 7201223.

This table covers the receivers that pick up the key-fob unlock signal. Read more

One part is listed for the 2012 Ram 3500 — MOPAR 68158217AB.

This table covers the key fobs that lock, unlock and start the vehicle. Read more

One part is listed for the 2012 Ram 3500 — DORMAN 99360.

This table covers the Park Assist (PAS) Camera modules. Typical signs include a cluster of unrelated faults, a no-communication code, or a module that will not sleep. Confirm power, ground and programming compatibility in the notes. Modules are rarely plug-and-play across years. Read more

This group shows a single part: MOPAR 5137541AA.

This table covers the ultrasonic park-aid sensors in the bumper. 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. Read more

8 Parking Aid Sensor parts are listed for the 2012 Ram 3500, from BOSCH, STANDARD MOTOR PRODUCTS, AUTOTECNICA and 5 other brands. BOSCH 0263043552 carries the "Popular" badge. All of them fit every engine offered in the 2012 3500.

Part numbers include BOSCH 0263043552, STANDARD MOTOR PRODUCTS PPS45 and AUTOTECNICA CY1317815, among others listed above.

This table covers the brackets that mount the Parking Aid Sensor. Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners. Read more

5 Parking Aid Sensor Bracket parts are listed for the 2012 Ram 3500, from WESTIN, TECHPRO and MOPAR. WESTIN 400015S carries the "Popular" badge. All of them fit every engine offered in the 2012 3500.

This group includes WESTIN 400015S, MOPAR 4806229AA and TECHPRO CH1174102 and the remaining parts above.

This table covers the Power inverters. Read more

MOPAR supplies both parts for the 2012 Ram 3500. All of them fit every engine offered in the 2012 3500.

This group includes MOPAR 5082095AB and MOPAR 56046933AA.

This table covers the totally-integrated power modules that distribute body electrical power. Typical signs include a cluster of unrelated faults, a no-communication code, or a module that will not sleep. Confirm power, ground and programming compatibility in the notes. Modules are rarely plug-and-play across years. Read more

This group shows a single part: MOPAR R8089322AG.

This table covers the powertrain-control modules that run engine and transmission. Read more

This group shows a single part: MOPAR R5150635AB.

This table covers the speed sensors on the transmission, transfer case or ABS ring. Typical signs include a dead speedometer, harsh transmission shifts, or a code for vehicle speed. Inspect the tone wheel and the connector before replacing the sensor. Read more

22 Speed Sensor parts for the 2012 Ram 3500 come from 13 brands — ULTRA-POWER, STANDARD MOTOR PRODUCTS, BECK/ARNLEY and 10 other brands. The "Popular" part is ULTRA-POWER 5S6546. 21 parts fit every engine; the other 1 is engine-specific.

The Economy section lists 11 options from ULTRA-POWER, BECK/ARNLEY, HOLSTEIN and 4 other brands — the catalog's value-priced group. ULTRA-POWER 5S6546 is listed in this group.

The Full Service Kit section lists 1 option from WALKER PRODUCTS — grouped under the catalog's "Full Service Kit" designation — the notes column spells out what sets them apart. WALKER PRODUCTS 24091042 is listed in this group.

Standard Replacement: 10 parts, from MOPAR, STANDARD MOTOR PRODUCTS, WELLS and 4 other brands. A representative part number is DELPHI SS11424.

This table covers the starter motors that crank the engine. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor. Read more

26 Starter Motor parts are listed for the 2012 Ram 3500, from WAI GLOBAL, TERREPOWER, PURE ENERGY and 8 other brands. PURE ENERGY 17948N carries the "Popular" badge. They are grouped as New and Remanufactured, with Remanufactured the largest group at 16 parts from PURE ENERGY, ACDELCO, BOSCH and 6 other brands.

This table covers the Starter Motor Heat shields. Typical signs include a bent shield rubbing a rotor, or rust-through that leaves the backing open. A rubbing shield will eat a new rotor. Straighten or replace it before the wheel goes back on. Read more

This group shows a single part: MOPAR 56044116AE.

This table covers the Yaw 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. Read more

This group shows a single part: MOPAR 56029496AC.