I bought a car which had Xtrons D708 in it and it has a camera on the back where the registration plate is, it has a wire running up to the headunit, but then stops behind it and im not too sure which one to connect it to, as I have tried most of the phono jack things.

Cheers!

 

Don't really know the specifics about the Xtrons but shouldn't there be a "Video Input" in the back of the unit? Plug the yellow video cable into that port and it should do the trick.

Make sure you also connect the power and ground cable of the camera for it to work...

That's basically the gist of it... hope this helps.