anyone have pics of back of factory head unit and pin out

I read online of a way to integrate an ipod mini plug AUX jack via a tie in to the CD Player with a switch. See http://www.instructables.com/id/Add-an-auxiliary-MP3Ipod-input-to-your-cars-st/

I would like images of the back of a Concert Sound II ('95 Riv) with the Cd changer to see what I am facing..

If anyone has done this before please share your results.

Tks,