Hi 3Fiddy,
Thanks for the quick reply.
Seeing as I haven't got the car yet I do not know what inputs are available on the back of the standard screen, but I have heard of people using them as reversing cameras etc so I think that it may have a yellow input.
I know that my one has the standard unit in it so I have to do it all myself.
I was thinking that if I could get an separate nav unit that had a typical Red, White, Yellow output cables then I might be able to split the video to go to the original Screen.
My only concern is that even if this is possible I know that alot of units have the ability to play music and sat nav at the same time, so would this still work.
I Live in SE London, so I might have to take you up on your offer.
Has anyone else tried this setup in the past and any experiences. I just really want to do something with that screen other than hide it forever.