Re: 72 GMC Longbed Duramax Swap
thank you for that!
i was thinking to myself that surely there was someplace for the electricity to dump out before it hit the ecm. but really, all of those wires are connected through the stock switch, i just engaged them in the wrong order. so i wouldnt THINK it would blow anything. but. i went from cranking and starting, to just cranking. so i'm not sure.
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