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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This is the relay on my Dodge. It is located on the under belly just below the camper 7 pin in the front of the truck bed.
