Where are the 2 electric brake controller wires located at the fuse box in the engine compartment on a 2007 Chevrolet Silverado 2500 H D PU new body style?

Answer 1

The trailer break wire under the hood is between the fuse box and the finder. Remove the fuse box by lifting the two handles provided. Gently pull up. The wire is taped to the wires going down along the finder. It is red with a blue stripe. The 12 volt supply wire is by the steering rod below the fuse box under the hood. It is a red wire with a black stripe. There are two studs sticking up on the front of the fuse box under the hood. The trailer break wire gose on the bigger screw( the one to the left when standing in front of the truck looking in.) The 12 volt supply wire gose on the right stud.( The one on the right when standing in front of the truck looking in.) They are metric studs. You will need to get nuts from your local auto parts store. Not sure on the size.