Faria Faria 33140 Dress Tachometer Gauge with Hourmeter 7000 RPM - White, 4"

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 above. By selecting the right tach and setting the switch on the back to the correct position you let the tachometer know how many pulses are sent per each engine revolution. About this item Wide range of scales Available for gas or diesel engines Multiple signal sources Rugged, Reliable construction 7 character LCD display See more product details