Yes, you can add a reversing camera to a mini. Reversing cameras are becoming more and more popular for cars of all sizes, including minis. The installation process is simple and straightforward; it typically involves connecting the camera to your car's electrical system so that it will activate when you put your car in reverse. You'll also need to mount the camera somewhere on your rear bumper or tailgate so that its view is unobstructed. Once everything is installed correctly, you'll be able to see what's behind your car as you're backing up via an LCD monitor mounted inside the vehicle.