Features: -Universal fits most motorcycle models. -Check the size before you purchase. -Lightweight circle design, general mechanical speed line interface. -Internal highlight LED night Light allows you to see mileage clearly. -Product function: Gear shape, odometer display, built-in steering, headlight, gear display light. -Instrument Light Wiring mode: Instrument light is divided into 6 lines. Black line, negative electrode, Red Line + black line (instrument light), Blue Line + black line (big light), Yellow Line + black line (steering light). -Gear Connection mode: Gear is divided into 7 lines. 1: Black line connecting positive electrode, 2: Red line is 0, 3: White line is 1, 4: Green Line is 2, 5: Yellow Line is 3, 6: Blue Line is 4, 7: Brown Line is 5. Specification Product Weight: 306g Product color: Black shell, black surface Product Packaging: 1 Independent corrugated cardboard packaging Material: Aluminium Product size: Long 5.5 cm, diameter 6.5 cm Backlight color: LED back blue light, with signal lamp, gear display lamp Mounting aperture: approx. 9.70 mm Working voltage: DC 12 V Package Weight: 320g/11.29 ounces Package Dimensions (L * W * H): 70 * 72 * 72 MM/2.76 * 2.83 * 2.83 Inch 1 x Motorcycle Speedometer