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Old 03-04-2014, 03:57 AM   #4
willett
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Join Date: Nov 2008
Location: North Vancouver, BC
Posts: 1,316
Re: Wiring diagram 1979 GMC 4x4

There's a big ground junction sorta under the cluster / upper driver footwell region. Check there, also look on the upper kick panel above the e brake pedal for another.
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