Update.. so i guess i had a misconnection somewhere, but now I was able to get to the menu jsut fine. I can get av1, av2 and av3 working with a dvd player just fine, but the rear backup camera doesn't show. I am using it through CAN connection. I have set the dip properly as well as the setting in the menu as cvbs4 on (down) and in the menu as CAN. Still ntihng comes up. Even tried connecting the dvd video plug in place of the back-up camera still nadda. The screen just seems to go back to the main BMW menu screen showing radio, telephone ect... I also tried connecting the Main wire to have it switch with the reverse light, but still nuttin. Any ideas?
TIA