Troubleshooting Trailer Wiring Where Driver Blinker Turns on Both Blinkers and Passenger Neither

Question:

When i turn the Driver side turn signal on it doesnt work, When i turn the Passenger side signal on both Passenger side and Driver side blink. Why is it working like that?

asked by: Craig

Expert Reply:

It sounds like you have some wiring issues on your trailer that shouldn't be too hard to clear up. Either someone ran both of your taillights to the the passenger side stop/turn circuit or you have a short between the two circuits and somehow only the passenger side works for both. Normally the running light circuit gets ran to both side of the trailer so it's possible that someone mistakenly wired it wrong.

I am not totally sure what connector style you have but you are going to want to go over the wiring of the connector on your tow vehicle and the connector on your trailer inspecting it to see if you can find either the miswire or the short.

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

expert reply by: Jameson C