Power on, the dashboard does not display:Maybe the power supply is not connected1. Please confirm whether the wiring is connected well.2. Confirm if the battery is broken or has no electricity
The tachometer does not display or display an error:It may be that the tachometer signal line is not connected.Please confirm that the speedometer line is connected well.
The dashboard is not displayed or shows an error:May be insufficient battery voltagePlease confirm if the battery voltage is greater than 9V When the electric door lock is turned on, the pointer cannot be returned:Maybe the power cord is not connected.Please check if the purple line is well connected The speedometer does not display or display an error:Maybe the axis of rotation is not connected.Please confirm that the axis of rotation is well connected. a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a