Aftermarket tach
Senior Member
Joined: Jan 2007
Posts: 369
From: United States
Well lets see....
Most tachs are wired red, black, green, white. Red goes to switched 12v power, black to ground, white to the dash lights (fuse in the fuse box works for this), and the green goes to the TACH plug on the HEI distributor.
Most tachs are wired red, black, green, white. Red goes to switched 12v power, black to ground, white to the dash lights (fuse in the fuse box works for this), and the green goes to the TACH plug on the HEI distributor.
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1986, 307, 455, 86, aftermarket, cutlass, guage, install, market, olds, oldsmobile, supreme, tach, tachometer
