For Motor: How to differentiate: There are two versions of M4/M4Pro motor, the judgment method is as follows: - Method 1: The foot support/kickstand is on the left side, the new version motor cable is on the left side, the old version motor cable is on the right side. The old version motor has now been discontinued. If your motor is the old version, you will need to replace both the motor and the turn signals with new versions. Just replacing the motor is not compatible and cannot be used. -Method 2: Judging according to the motor code. You can take a picture of the motor code for me to confirm.