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Old 07-21-2019, 02:51 AM   #2
Curtb1971
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Join Date: Feb 2014
Location: Erie Colorado
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Re: 72 k20 wiring help needed

I think the blk/wht and black wires you're seeing are for the factory ammeter gauge in the gauge cluster. Basically they measure current output of the battery side vs alternator output and the gauge needle leans toward the side with the greater output.
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