For a quick test, try hooking a long set of jumper cables from the battery to a good clean spot on the bed. Bare a spot if you have to. Then see how the lights work. That will make sure you have an excellent ground. Done that test on trailers for years now!

 

Not a ground issue. Any other ideas?

 

i noticed you installed a flat bed i will bet you have a wiring problem most bulbs on the bed go through the ecm if a load changes or he wired the two tail lights togather like normal this will cause this problem it can also burn out the ecm , might be an expensive lesson

 

I guess I am going to let the dealer and the bed installer fight it out. Bed installer looked it over and said he did everything correctly. I haven't been to the dealer yet (time issue) but they haven't been helpful in the past. Time to find a new dealer I believe!!!

 

Dropped the truck off at the dealer this morning. I will keep you guys posted on the solution to this nagging problem.

 

Problem was faulty wiring installed on bed. Dealer had to replace some wiring wiring and disconnect others to get my turn signals working again. I am now off to the bed installer to see what they will do for me. After all I gave them first chance to fix the problem and after 30 seconds of looking at it they it was a Dodge problem.

 

Glad to hear it is at least working again! I'm sure after reading the dealer's work order they SHOULD see the error of their ways!