Hello - I am looking to do a quick install of the XM Commander MT tonight after work. I have a big road trip Saturday and wanted to put some tunes in my car. Car is a '03 M5 with NAV. I will be plugging the commander into the aux-input.

My main question is, how can I easily grab accessory power for the commander? I don't really feel like getting into ripping the car apart. Can someone provide a quick and relatively easy way to get to that wire - I believe purple/white.

Thanks in advance.

Remove radio and grab accessory power there.