Dear UkenGB,

you need NTSC camera, not PAL.
camera input on TV-module is alwayes NTSC in every country version.
For example : if you travel by car in other country where TV is NTSC, you have to switch tv in NTSC. So your camera should not work..., but BMW are clever and fixed camera input on NTSC. I also bought PAL version, that replaced by NTSC.
you can find realy and wiring diagram searching forum. Also I posted second relay installation diagram, which eliminates engibe noises.