I have started to install an xm commander in my 01 325i. Here are a few links i have found helpful: http://www.pbase.com/jeffwong/centerconsole http://forum.e46fanatics.com/showthread.ph...ht=xm+commander http://www.my330i.com/mod18.php
For my install, I just removed the ash tray, cut a piece of foam and put the display in there, then took apart my console to run the wire to the trunk, since I am using a blitzsafe adapter to connect the xm through the cd changer plug. There are other ways to run the wires but this was the neatest for my install. Hopefully these help, there are some other good ones out there, but I cannot remember the sites.