I just noticed that b/c the X3 did not come with a CD Changer the #42 fuse was missing which could be my problem. Ill have to put this fuse on and try it. Tom would you know which of the 3 wires coming from the BMW side should have 12V ? is it the red ? b/c even with the fuse on i couldnt get power on any of the 3 wires with the ignition on position 2.