What needs to be done to install factory CD Changer in my 2001 Blazer? Is it a simple plug and play install or is there more to it? Also what year CD changers will plug up?

 

I'm also looking for an answer to this. I have an adaptor kit I'd like to give to my co-worker for his blazer for an ipod. It will work as long as the CD changer cable is already in place.

There is no CD changer installed but is the harness there already?