I have a 06 chevy 3500 dump truck and went to put after market reverse lights on it for the winter time. The stock lights worked before and when I went to install the aftermarket ones now the reverse lights don't work at all, I have checked the fuses and cant find one thats blown and now there is no power going to the reverse lights I used a test light and checked the wire. I'm stumped on this one.

 

Check the TBC fuse 15 amp. It is inside on the drivers side of the dash behind the panel. You also need to check the TRl B/U fuse in the underhood panel.