HD Black Series 4K Diesel Tach Alt/Pulse
Faria Heavy-Duty 4" Tachometer (4000 RPM) (Diesel) (Mech Takeoff & Var Ratio Alt)
Features Perimeter-lighted black dial with bold white graphics, black aluminum SAE style bezel, contoured white pointer and flat glass lens.
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 hte 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.
Wide range of scales
For diesel engines
Multiple signal sources
Rugged, Reliable construction
Size: 4" (3.375" [85mm] mounting hole)