PRO RED 6000 TACH I/O

Perimeterlighted black dial with stylish red and white graphics, black aluminum bezel, tear drop white pointer, and flat glass lens. Electronic tachometers work by counting pulses generated by the ignition system, alternator, tachometer signal generator or magnetic pickup sender. The tachometer is hooked up to +12vDC, Ground and one of the signal sources.. Features Flat Glass Antifog, Scratch Resistant Lens; Black Aluminum Bezel; White Numeric Values with Red Increment Indicators; White Tear Drop Pointer; Specifications Hole Size: 4 in.; RPM: 6000;.