Check the listing for details. 3 3/8" Multi Function Programmable Tachometer White LED Gauge Black Bezel. Condition: New. Listed at 110.46 USD. Absolutely stunning precision. Completely programmable. Looks that kill. The Master Tachometer by Intellitronix. Featuring a custom-designed LED bar graph, the unit is microprocessor controlled with peak rpm memory recall, and automatic night dimming, Shift light, and RPM activated Switch (Can handle 3 amps) . It also includes in-dash mounting hardware and installation instructions. It is only 3 3/8" diameter & 1 1/2 inches deep. It has a 0-9,999 readout in 100, 10 , or 1 RPM increments (ex. 9,900 , 9,990 , 9,999). It works on 1-2-4-6-8-10-12 cylinder engines. All Intellitronix products include a lifetime warranty and are proudly made in the USA! Also, red is best for night driving. Features include: Fully Programmable Tachometer for 1-2-4-6-8-10-12 Cylinder Engines! (Default is 8 Cyl) RPM is User select-able increments 9,900 ; 9,990 ; 9,999 (Default is 2 active digits) LED Bar Graph with programmable red line (full bars is set at default of 6500 RPM) Programmable shift light Programmable Output light with activation wire (Activated Switch ; can handle 3 amps) High RPM memory recall Automatic Night Dimming (50%) If your vehicle has a magneto system, connect the tach signal wire to the negative side of the coil. Do not connect the tach terminal to the positive (+ or high voltage) side of the ignition coil. Many tachometers, shift lights or RPM-activated switches will not read directly from a Magneto, so your installation may need a Magneto Signal Converter to function properly.