Help needed with DVD and TV

[x5fromOz]

Hi all,

I have recently installed TV in Motion module in my OEM TV and works brilliantly.
I also have a rear DVD (overhead BMW OEM) and would like to connect the TV tuner to the rear screen and the DVD player (alpine) to the front screen.

Can anybody tell me if this can be done with the additional TVon Nav av harness and most importantly, all be connected from the rear of the vehicle and therefore not have to remove head lining/centre consoles, seats ,toilets,basins etc etc...thank you for your help...as a result of this site I am progressively turning my 4.4 into a great drive!!