2012 Jeep Wrangler 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

18 Alternator / Generator parts are listed for the 2012 Jeep Wrangler, from WAI GLOBAL, PURE ENERGY, MOPAR and 8 other brands. SKP SK211584 carries the "Popular" badge.

In the New grade, WAI GLOBAL, SKP, TYC and 4 other brands supply 8 parts: brand-new units rather than rebuilt ones. A representative part number is SKP SK211584.

In the Remanufactured grade, PURE ENERGY, ACDELCO, BOSCH and 6 other brands supply 10 parts: factory-rebuilt units with new wear components. A representative part number is ACDELCO 3343045.

This table covers the brackets that mount the Alternator / Generator. 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

One part is listed for the 2012 Jeep Wrangler — MOPAR 4627047AA.

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

7 Battery parts for the 2012 Jeep Wrangler come from 7 brands — DEKA, LUCAS, ACDELCO and 4 other brands. The "Popular" part is DEKA 9A48.

In the AGM (Extended Life) grade, DEKA, LUCAS, ACDELCO and 3 other brands supply 6 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 9A48.

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 FT68048.

Part numbers include DEKA 9A48, LUCAS LBAGM004A and ACDELCO 48AGM, among others listed above.

This table covers the Battery Current 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

5 Battery Current Sensor parts are listed for the 2012 Jeep Wrangler, from DORMAN, BOSCH, MOPAR and 2 other brands. DORMAN 956399 carries the "Popular" badge.

Listed part numbers: DORMAN 956399, BOSCH 0199300199 and MOPAR 4692269AI, plus the other parts above.

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

2 Battery Tray parts for the 2012 Jeep Wrangler come from MOPAR.

This group includes MOPAR 68188030AA and MOPAR 68079473AG.

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 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

12 Fuse parts for the 2012 Jeep Wrangler come from 2 brands — LITTELFUSE and MOPAR. The "Popular" part is LITTELFUSE MIN15.

In the 10 Amp grade, LITTELFUSE and MOPAR supply 2 parts: grouped under the catalog's "10 Amp" designation — the notes column spells out what sets them apart. A representative part number is LITTELFUSE LMIN10.

The 15 Amp section lists 2 options from LITTELFUSE and MOPAR — grouped under the catalog's "15 Amp" designation — the notes column spells out what sets them apart. LITTELFUSE MIN15 is listed in this group.

The 20 Amp section lists 2 options from LITTELFUSE and MOPAR — grouped under the catalog's "20 Amp" designation — the notes column spells out what sets them apart. LITTELFUSE MIN20 is listed in this group.

In the 25 Amp grade, LITTELFUSE and MOPAR supply 2 parts: grouped under the catalog's "25 Amp" designation — the notes column spells out what sets them apart. A representative part number is LITTELFUSE MIN25.

In the 30 Amp grade, LITTELFUSE supplies 2 parts: grouped under the catalog's "30 Amp" designation — the notes column spells out what sets them apart. A representative part number is LITTELFUSE JCAS30.

The 40 Amp section lists 1 option from LITTELFUSE — grouped under the catalog's "40 Amp" designation — the notes column spells out what sets them apart. LITTELFUSE JCAS40 is listed in this group.

The 60 Amp section lists 1 option from LITTELFUSE — grouped under the catalog's "60 Amp" designation — the notes column spells out what sets them apart. LITTELFUSE JCAS60 is listed in this group.

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 Jeep Wrangler come from 3 brands — FIAMM, MOPAR and STANDARD MOTOR PRODUCTS. The "Popular" part is FIAMM 7210223.

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, MOPAR and STANDARD MOTOR PRODUCTS 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

MOPAR supplies both parts for the 2012 Jeep Wrangler.

Listed part numbers: MOPAR 68209969AA and MOPAR 68209837AA.

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

DORMAN supplies the 4 Keyless Entry Remote parts for the 2012 Jeep Wrangler.

Part numbers include DORMAN 99277ST, DORMAN 99174 and DORMAN 99174ST, among others listed above.

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

2 Power Supply Module (TIPM) parts for the 2012 Jeep Wrangler come from 2 brands — DORMAN and MOPAR.

This group includes DORMAN 598708 and MOPAR R8244883AA.

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

4 Speed Sensor parts for the 2012 Jeep Wrangler come from 3 brands — HOLSTEIN, STANDARD MOTOR PRODUCTS and WELLS.

The Economy section lists 2 options from HOLSTEIN — the catalog's value-priced group. HOLSTEIN 2VSS0460 is listed in this group.

Standard Replacement: 2 parts, from STANDARD MOTOR PRODUCTS and WELLS. A representative part number is STANDARD MOTOR PRODUCTS TCP03.

Part numbers include HOLSTEIN 2VSS0460, HOLSTEIN 2VSS0157 and STANDARD MOTOR PRODUCTS TCP03, among others listed above.

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

14 Starter Motor parts are listed for the 2012 Jeep Wrangler, from WAI GLOBAL, PURE ENERGY, REMY and 6 other brands. PURE ENERGY 19202N carries the "Popular" badge.

New: 6 parts, from WAI GLOBAL, PURE ENERGY, REMY and 2 other brands. A representative part number is PURE ENERGY 19202N.

Remanufactured: 8 parts, from ACDELCO, PURE ENERGY, BOSCH and 5 other brands. A representative part number is ACDELCO 3362212A.

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 56038988AC.