Disco II Wiring Diagram

Anybody know of a wiring diagram available for the Disco II?  I'm hoping to tie an MP3 player through the CD Changer under the passenger seat and I want to hardwire the 12v, etc.  Does anybody know which wire corresponds to what?

I remember seeing something on the web where someone had disabled the CD changer to play their ipod. If I find it, I'll post the link...
 
here's an adapter...
 
http://www.oemautosound.com/pc-543-158-land-rover-ipod-interface.aspx