Go to http://www.installdr.com Make sure that you can read pdf's, I have found they are the best when dealing with any radio install and color codes for the harnesses.
1.On both the right and left sides of the black housing that goes around the radio and air controls, there is a circle with another circle inside of it, push in the middle circle, this will release...
try this website below (copy & paste). worked for my daughter's radio. do a web search and there are several that won't ask for $$ to furnish codes. good...
It's very simple.
First you need to remove thhe U-shaped plastic piece (with the 12volt cig-lighter). To do this, simply take a flat head screw driver to the lower right hand corner and pry it back....
Get a manual on it if you want to do it but it is not a job for even apprentice mechanics as leaks are hard to stop when working on the sun roof. I suggest taking it to the auto trim shop.