Ok lets start making this a proper howto.

First you need to remove the factory head unit.

Using a plastic interior removal tool or something similar gently pry out the trim ring from around the head unit. I started beside the track forward aka to the right button area on mine. It gave the most and popped out nicely. Work your way around the ring and it will come off easy enough.

Attached Images

 

__________________
Just BMW's - All cars and trucks was two pages long
1994 318is
1997 528i
2000 323i
2001 X5 3.0 auto
2005 X5 3.0 auto
2011 535xi auto
2013 X5 xdrive35 Turbo
More are at my website

Aftermarket E53 Radio Install