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Chevy101

Mar 13, 2011 10:07 AM

Aftermarket tach

Anyone know how to install an aftermarket tach on a 1986 cutlass supreme with a 307

svnt442

Mar 14, 2011 02:08 AM

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.

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