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Ok, I have read the various threads about where the tach wires are and I found all 4 of them. But I was just wondering, with the tach illuminent wire (the one wire that lights up the tach at night) shouldnt there be that wire in the wiring harness for the gauge clusters? Id like to keep everything simple and just tap off of the wiring harness for the gauge cluster. Do any of you guys know which one it is and/or if its do-able?