Specification: Material: ABS plastic Shell color: black Lens color: transparent Voltage: 12V DC Measuring range: 0~160km/h Unit: km/h Diameter: 66 mm/2.6 inches Height: 57mm/2.2in Mounting Bracket Length: 72mm/2.8" Distance between two mounting screws: 45mm/1.8in Cable length: 30cm/11.8in Compatible with all motorcycles with 12V power supply Wiring method Connect the black wire to the positive pole of the power supply Connect the green wire (backlight) to the negative pole of the power supply Green and red wires (neutral gear) connect to the negative pole of the power supply The blue line (High Beam) is connected to the positive pole of the power supply Orange & light blue (turn left and right) to the positive pole of the power supply packing list: 1 motorcycle speedometer