since the accident, now i have it back was wondering if maybe there is a fuse or where the wires might connect at the back of the truck. looks like the replaced the rear bumper if i read it correctly, maybe they forgot to hook up a wire back there? anyone know of some easy places to look for possible solution. i won't be able to get the truck to my dealer for awhile and thought i would have at it......thanks.
jim

 

Check behind the hitch up high by the spare tire there is a white plug on mine.

 

it was so long that i originally asked this question i forgot about it! old system was fried and they put in a new one......thanks.