Jul 09, 2014 - 03:14 PM
I would start by checking the tow truck fuse to insure there is indeed power getting to the plug. The trailer must be plugged into the truck . Next the plug it self checking the pin the black wire is connected to is tight . The next place for a connection is the J box (4X4) under the front C/S of the trailer there the black wire is connected to a yellow. There is also a white ground wire there that should be grounded to the back of the box . The next place I would look would be the wall switch ,then the lights.