Plugging fifth wheel into bumper plug?
So on this 2003 GMC 2500HD that I bought recently I was finally installing the fifth wheel hitch and the brake controller, then I cut the tie straps from the wire harness between cab and box to hook u...
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Another advantage of using the bumper plug is that when disconnecting, you can pull the truck forward enough to have the pinbox clear of the truck bed, before disconnecting the brakes. When connecting up, you can connect the brakes before backing the truck bed under the pinbox.
