I'm looking at doing my own satellite prep based on http://www.e90post.com/forums/showthread.php?t=10536 I'm curious if anyone knows how to get installation documentation for the sirius receiver and the e60 from online. I've read the e90 version but curious about any differences in the docs for my car. Also, has anyone done their own DIY satellite prep install? I'll be peeking into my trunk and back seat tonight to verify the MOST box and current wiring. Thanks. Jon