No Running Lights On Boat Trailer After New LED Harness Install

Question:

hooked up new wiring harness LED trailer lights on my boat trailer and the running lights dont work but the brake and the turn signals and hazard lights do work Online Nissan Titan Texan V8

asked by: Casey

Expert Reply:

The running lights are on a different circuit than the brake/turn signals so this is not too uncommon of an issue. The first thing I recommend you do is take the ground for both running lights and run a jumper wire up to the main trailer ground as this is the most likely the issue. If the running lights still don't work once this is done that leaves two other things.

I recommend you check to see if the vehicle's trailer connector has power on this circuit. If not then you have a bad fuse but if it does then you have an issue with the wire associated with this circuit on the trailer and you will need to start tracing.

expert reply by: Conner L