Crashff02

I have a 2011 2500, the left tail light has an issue that I can not seem to figure out. First it is dimmer than the right, and the blinker works but not like it should, then when you press the brake the reverse lights come on, when you put it in reverse the whole left tail light goes out, the over cab light works fine, the right tail light is fine except when you brake the reverse light comes

What I have tried:
Replaced bulbs and sockets, traced all wires to the wiring harness to check for shorts, changed fuses and checked fuses

Anyone have any ideas?

Busboy

Check the wire harness going to the trailer plug also check the pins inside the trailer plug.

Devin_01

sounds like a ground issue to me.

Mexstan

Don't know if the 4th gen are the same as the 3rd gen, but there were a lot of similar issues on the 3rd gens. The problem in most cases were the tail light circuit strip in the tail light. If yours has these, try switching them left to right and see if the problems follows the switch.
Genos has replacement strips.

Islanders

Did you ever figure out the problem? We are having the same issue and have tried many different solutions.