Contributed by: Rob_
BMW Backup Camera Kit
The BMW kit comes in two flavors - one that has the video switcher (metal box w/ the blue and white connectors) for those that DON'T have the OEM TV module, and one that doesn't have the video switcher for those that DO have the OEM TV module.
Part number 66 21 0 301 007 contains both the camera kit and the video switchbox kit (note: may no longer be available).
Part number 66 21 0 303 079 contains just the camera kit.
Part number 66 21 0 303 083 contains just the video switchbox kit.