1. Preparation tools: screwdriver, glue, etc.

2. Wipe the parts where the rearview mirror needs to be installed with clear water.

3. Apply glue to the ball and the fixing place on the car body.

4. After a period of time, put the ball back in its original position and fix it.

5. Tighten the screws with a screwdriver.

6. Adjust the angle of the rearview mirror to complete the installation. It should be noted that the use of glue should follow the instructions of glue, so as to ensure that the fixing force between the ball and the car body is enough to prevent the rearview mirror from loosening again.