Calnorth thank you for your reply yes the reverse lights are working, was tempted to take the radio out to see if all the connections are plugged in securely, i have checked the connections on the talegate and they all look ok, may be a case of leave well alone then

What would be the best approach to starting to fault find what would be the first place to look

Good evening
I have recently bought a 2009 ntech and the reverse camera doesn't work at all, there is no difference to the screen when reverse is selected it just stops on the same screen.
Any help would be greatly appreciated.
Thank you