Please consider whether you want to install the rear camera on the inside of the rear windshield, or above the license plate outside the car.
In general, installing the rear camera inside the car can meet basic recording needs and is easier to set up.
On the other hand, installing it above the license plate outside the car provides a wider view and better recording quality.
But it with a more complicated installation process, you may need to seek the help of a mechanic for professional installation.