Faria Faria Beede Instruments Faria 33842 Chesapeake Tachometer 4000 RPM Gauge - White SS, 4", Beige

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. 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 Color: White See more product details