In order to get the image from the reversing camera to the display screen, there are both wired and wireless systems available.
Wired systems are easy to use. A cable simply runs from the camera to the monitor. If you choose a wired cable, the wires should run inside the vehicle to protect them. Hiding them below the carpet will give you the best option.
In contrast, wireless reversing cameras have transmitter attached – usually a separate box – as well as a receiver for the display screen.