LCD DIGITAL COUNTER ELECTRONIC UNIVERSAL - Fits most motorcycles and ATVs 7 COLORS OF BACKLIGHT DIAMETER 9.5cm AVAILABLE COLORS (please indicate in the comment): SILVER CHROME BLACK (out of stock) COUNTER FUNCTIONS: - speedometer up to 199 km / h - tachometer up to 10,000 rpm - daily/total mileage - fuel level To change the color, press the button on the back of the housing once and then hold it for longer (at this point the colors will start to change) and release on the selected color. The button is also responsible for changing the mileage display from daily to total. The speedometer is driven mechanically by a cable. Steel housing mounted with one screw. HOW TO CONNECT WIRES: black (+), green (-), blue and white: fuel level, controlled by ground red-black: tachometer signal (+).