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Troubleshooting Trailer Wiring on 2016 Nissan Pathfinder After Trailer Side Wiring Short

Question:

2016 Nissan Pathfinder. I installed your 7 connector wiring harness and Draw tite trailer hitch. everything was working great. I had a short in the separate connector on the trailer side. It blew the running light fuse. The running lights work after changing the fuse but there is no power to the other wires so the turn signals and brake lights do not work. I changed the relays to no avail. Is there some other place there might be a fuse? Thanks.

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Expert Reply:

Since you have already tried replacing all the relays in the T-One Vehicle Wiring Harness for Factory Tow Package - 7-Way Trailer Connector # 118273 on your 2016 Nissan Pathfinder, and you've replaced the running light fuse, it sound like you may have another fuse that needs replacing or have wiring that has overloaded somewhere. I've checked your owners manual and cannot see any fuse locations listed there, so I can't give you a location to look at.

If the other fuses are all good, then the best way to find the wiring issue is to use a circuit tester like # PTW2993 and check the wiring functions at each connector (also make sure all pins aren't bent or broken), and then trace the wire back probing it every few feet to find the short. You can replace the wire with # 16-1-1 as needed.

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