its what i thought... theres probably a tv tuner box and it has a/v input jacks on it. from the site---->You can also choose to have us install auxiliary inputs to the video module so you can add a DVD-player, video game console, or any other device you wish to your car. (Tune to channel "AV" and your device is displayed.)
A forum community dedicated to BMW E46, E90, and F30 owners and enthusiasts. Come join the discussion about M performance, turbo kits, engine swaps, builds, modifications, classifieds, troubleshooting, maintenance, and more!