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Painless Tach Driver
The Gen IV Tach driver converts the crank signal from any 2006 and up GM Gen IV 58X Crank Wheel into a signal readable by most aftermarket tachometers. Simple 4-wire hookup with power, ground, signal in, signal out. No cutting of fuel injection harness required. This tach driver will work with any aftermarket tachometer that is 12 volt negative coil driven.