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Old 07-14-2013, 03:35 PM   #1
1985GMC
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Join Date: Nov 2012
Location: Morris, ct
Posts: 54
Red 12v wire?? Where does it go

1985 gmc k2500 4wd vinM 350ci

Alright driver side of firewall in engine bay there is a 20amp glass fuse. Coming off it is a red 14gauge wire. It's about 3 feet long. It seems like it goes into the cab. It has a constant 12v. Idk where it goes. Can't really find it on the wiring diagram and I'm a little confused with some abbreviations in the wiring diagram. For some reason I think it's 4wd related idk.

Anyone got an idea?
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