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...
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I added a continuous duty solenoid so the 12V is only at the plug when the ignition is on. But there's no need to cut into any wires. I used a fuse tap to pull switched 12V from an existing fuse slot.
