Description
Faria Chesapeake White 4" Tachometer 4000 RPM Diesel Mech Drive
Electronic tachometers work by counting pulses generated by the ignition system, alternator, tach signal generator or magnetic pickup sender. The tach is hooked up to +12VDC, Ground and one of the signal sources listed.
4" - Hole size: 3.375" (85mm)
