I picked up my new X5 35d on 12/18 and have been enjoying it very much. I have a Valentine hard-wired in my M5 and wanted to do the same with this car. Following the excellent description and pictures I was able to verify the switched green and white wire and easily installed the Valentine. The only issue I had was getting a good connection with the blue, clip-on connector. The wire was too small a gauge to allow the metal portion to make a good connection apparently. I took the blue connector off and crimped the metal portion that slips onto the green / white wire, re-attached the clip on connector and everything worked fine after that.
Thank you again X5Mod
Robert