Next to the camera itself the original rear view camera system does also need the original camera module. This module is connected to the CANbus network of the car. (If connected) This module sends a signal over the CANbus network which unlocks the rear view camera input on the display. Without this module the camera input is locked. The original camera module will only accept the original rear view camera. The parts of the original rear view camera system are pretty expensive. All needed parts will cost about €750,-.
sorry to hijack.ive noticed on the module it say camera is it possible to actually connect a camera to the unit to switch it on daft question i know
However some clever Russians developed their own CANbus module which unlocks the camera input of the display. This module supports most camera's including the Chinese ones which can often be found on Ebay. The Russian module costs €70,- and can be found on the following website: