Function : 1. Mileage: ODO (total mileage) maximum display mileage is 99999km, TRIP (subtotal mileage) maximum display The indicated mileage is 999.9km, which can be switched between metric and imperial systems; 2. Speedometer: The maximum speed is 199km/h, which can be switched between metric and imperial systems; 3. Indicator light: left and right turn signal lights are green, high beam lights are blue, neutral indicator The light is green, and the indicator light of the fuel gauge is red; 4. Button: switch between total mileage and subtotal mileage, subtotal mileage to zero, parameter setting; Connect -green: negative pole, -black: positive pole, -orange:trun lamp, -yellow white: oil level, -gray: turn lamp, -blue: high beam lamp, -green white: neutral, -blue white round head wire: engine speed How to set Press and hold the button for 5 seconds while turning on the power, and leave hold when the setting interface appears!