Troubleshooting Trailer Wiring Running Light Circuit Not Functioning
Question:
Hi there, gotta say I’m stumped. I’ve got a 2015 F250, when I hook it up to my tandem tilt deck 5th wheel everything but the running lights work. However, when I hook up to the tridem 5th wheel everything thing works like it should. Now I would assume the wiring is bad on the tandem. But then I take the bosses truck and hook it up to the tandem, then everything works, including the running lights. Any ideas or advice would be greatly appreciated, thanks.
asked by: Pete S
Expert Reply:
It has to be an issue on the tow vehicle's wiring. Most likely it's a dirty pin on the running light circuit of the truck's 7-way which is the pin in the 11:00 position. Try cleaning that pin off and you should see the circuit start to work again. I also attached a help article on troubleshooting trailer wiring for you to check out too.
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