Troubleshooting Trailer Running Lights Not Functioning on a 2010 Nissan Titan

Question:

iSSUE WITH PLUG AND PLAY HARNESS. i INSTALLED A 20119 AND WHEN WE PLUGGED IN OUR TRAILER WE DID NOT HAVE ANY LIGHTS. I WAS TOLD TO GET RELAYS FROM THE DEALER THAT COST 75 DOLLARS. AFTER INSTALLING THEM AND I HAVE EVERYTHING BUT RUNNING LIGHTS. WE HAVE TURN AND BRAKE PLUS CONSTANT TOW CHARGE LINE???

asked by: Ken S

Expert Reply:

The first thing I would check is the trailer wiring running light fuse located in the power distribution box under the hood. Once the fuse box is located check the legend on the lid to determine the correct fuse to check. Blown running light fuses are a common problem with the Nissan Titan trucks.

If the running light fuse is not blown or missing, you should also check fuses in the cab of the truck. Again use the legend on the cover, you will have a fuse box on the passengers side and the drivers side under the dash.

Finally, if the fuses all check out, you will need to check the connector itself and make sure that there is no damage or corrosion inside the connector that could be causing the running lights not to work.

expert reply by: Jameson C