Troubleshooting Trailer Wiring on One Side of Trailer Not Functioning

Question:

Hello, Ive lost all the running lights and my blinker/taillight on the right side of my horse trailer. Im not the best wiring guy...can you give me some advice? Thank you!

asked by: Mark J

Expert Reply:

What you described sounds like a weak or bad ground on the right side of your trailer wiring. Each of the circuits on your trailer need to be grounded and the ground circuit on that side of the trailer is what all circuits you mentioned have in common. So try checking to make sure everything is grounding like it should. Sometimes lights ground through their hardware so if that's the case make sure they are connected to a clean metal surface. Or if the ground with a wire make sure it's connected to a clean metal surface. You can also run a jumper wire from there to the main ground harness as well.

I also attached a help article on troubleshooting trailer wiring as well.

expert reply by: Jameson C