try running a wire from ur battery?
or see if u can get a long ass cigarette lighter with wire....Plug it in the cigarette lighter, or get the bmw flashlight adapter and then just tuck the wires in. i got neons goin to the back and front plus my radar detector all plugged in my flashlight switch....all wires tucked in and perfectly clean...not always the best way...but when bmw tries talking shyt to u like they tried with me, just tell them its all pluged in there....ok im rambling, sorry
if your car is pre-wired for the cell phone, you can tap into the wiring under the center console - check this website http://mywebpages.comcast.net/lboyers/hf/technical.htm
for a wiring diagram. This is how I got power to my delphi xm unit mounted in the center console.
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