Troubleshooting Parking Lights Not Working on Trailer Connected To a 2014 Jeep Grand Cherokee  

Question:

Expert Reply:

If you have a factory trailer wiring harness the first place you should check is the fuse box on your 2014 Jeep Grand Cherokee Overland. In the engine compartment there is should be a yellow 20 amp fuse in terminal F29. This is the fuse that sends power to the parking lights on your trailer connector.

If the fuse is good or you do not have a factory harness you will want to determine if the fault is on the vehicle side or the trailer side. A Test Light # PTW2992 will help you to determine if power is getting to the connector. On a 4-way flat connector this will be the female connector closest to the male terminal. If you have a 7-way connector it is the blade in the 11 o'clock position looking into the vehicle side connector.

If you do not have power you will want to check any connectors for damaged wiring or terminals on their way to the vehicle side connector.

With power to the parking lights circuit you will want to test the trailer side of the connector and continue following the wire until you are able to find where power stops. The wiring may have an internal short or break in the wiring. Depending on the age of the wiring will determine if you can repair the damaged portion or if you should replace the entire wiring harness.

It the trailer is 20 years old or more, or it has wiring that is need of replacement we have several kits available and I can recommend for you the correct one based on your trailer.

expert reply by: Bud M

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