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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The 2011 2500 hd had the wire harness for the bed already there along with bumper plug.....all dealer had to do is mount plug in bed and hook to existing wires....maybe your 2500 hd is prewired too for a bed hitch.....
