Important Notes: Please test the camera before sticking the car recorder rear view camera holder to the rear windshield to make sure it is not installed upside down. It is better to stick the rear camera mount to the center of the rear window glass of the car. The backup camera holder can be only mounted to the rear window glass inside. If the rear windshield of the car with a black film, it will affect the display effect of the rear view camera. You can also choose another rear camera holder mount of ours with similar function, search ASIN B09Y2Q4T7L Installation Method: 1. Determine the mounting direction of the holder and backup camera. 2. Correctly install the backup camera on the rear windshield bracket with 2 screws. 3. Test the camera to make sure it is not installed upside down. 4. Stick the rear view camera mount to the right position of the rear windshield. Contains: Rear view camera rear window glass mount *1 Sticky adhesive*1 Screw*3