Had a hunt around to see if any possibility. Nothing found just how to add a reversing camera.
I did consider use of VCDS to make it active permanently but then possibly no other display function available.
3 possible options to consider/investigate.
Add a WiFi camera and link to it on the display?? or simply use a smartphone as display.
Add a second rear view camera and dedicated display.
Add a Front & Rear view camera system with the rear view displayed on the screen. bit small possibly
Something like this. Camera could be mounted inside on the drop down storage unit to simplify wiring.
High resolution video footage taken by the Goodyear dashcam can be used by the police and insurance companies to cover you in case of false accident claims by third party drivers, cyclists or pedestrians. Most dash cameras are low resolution and the footage can be very grainy and unusable by law...
www.ebay.co.uk