We offer the Dietz kits as well on the site, the 1260 is the correct kit for the X5.
Dietz Video Multimedia Interface - 1260
http://www.europeanautosource.com/pr...roducts_id=341
However the VSM would probably be a better kit for the camera, we it will provide automatic switching of the camera as the X5 is put into reverse.
Video Source Module (VSM) for BMW - Core System
http://www.europeanautosource.com/pr...roducts_id=161
We have pictures of the camera mounted into the taillight in this thread:
http://www.xoutpost.com/vendor-forum/...reen-more.html
Feel free to contact me with any specific questions you might have.