ok my problem is that i am putting a shift light in my 91 ls, its mounted int he cigar lighter cuz i figured that it would be easyer to wire up at the ecu… my question is does any one know exactly wich pin and wire color the tach signal wire is at the ecm plugs? any help would be great ive spent the last 3 hours looking online for it but with no luck…thanks
since your new…
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