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Re: Which wires should I keep?
when you get your harness youll have 4 wires that have to be hooked to the truck...youll have a constant 12v, a switch on 12v, and a couple grounds...in my swap harness there was a tach wire but I don't have a tach so im not sure exactly how it hooks up
for my switch on wire I just used the wire that went to the hei...I pulled it back thru the firewall...
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