Thanks Tom. I just called my local BMW dealer, and one of the techs there suggested that the vehicle needs "programming" to activate the power sources, and I should bring the car in. Does this sound right? I don't want to pay for 2 hours of shop time for this. This is supposed to be plug and play!! I am thinking of just cutting the wires and splicing in directly to the battery, and then just going with a griffin itrip if that doesn't work.