Re: 77 c20 electrical issues.
i had same issue with an 86 c10 i was working on. it would spark and smoke misteriously behind the block and by the trans. It was a ground issue. if you do not have a solid body, chassis and engine ground. my truck was basically searching for ground anywere is could find. i cleaned all cables and fixed the grounds.
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"Buckle up I wanna try somethin!!"
"of course it will hold!, I welded it!"
1977 c10 under knife for full rebuild, 5.3l 4l60e drive rain swap, replacement frame and green repaint
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