7 pin plug
I have a 2004 chevy 2500 hd duramax allison The 7 pin plug does not transfer 12volt to the trailer plug (both the rear or the in box plugs are the same) is their a fusible that has to be added some w...
Forum Discussion
Yes, on GMs it is possible to drasin trucks battery.
I recommend installing a relay energized by ignition switch on position.
Wiring diagram
I recommend installing a relay energized by ignition switch on position.
Wiring diagram
