I tried to install a VR3 camera in my x5 about a month ago. I had it completely installed and when I went to try it I found that the transmitter and receiver where to weak and the image was unusable. The wireless system also affected my vehicles Bluetooth system. I would recommend a hardwire backup camera since the VR3 was a disappointment. I eventual discovered pin 17 on the video module and tapped a hardwire backup camera into the RCA camera input. I also did the camera on demand trick by running a wire and installing a switch up front to ground out pin 17. If you don't have the nav or the video module. Your best bet is a hardwired camera and monitor system off eBay. Just trying to save you some time. If you get the VR3 to work then I would love to see pictures.

Good luck