Red = Power (found a "key on" power source in the fuese box)
Black = Ground
White = Tach illumination (I've got mine wired into the dimmer switch that way I can turn the illumintaion up and down with the stock gauges)
Green = Tach signal (Wire it into the negitive (I think???) side of the coil. Wire it onto the "tach out" port if you have a MSD box.)
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1987 Buick T-type
1998 HD Electra Elide
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