Punkman,
I too had me CD changer installed myself today. I don't remember there's a third plug. I don't have the nevigation system so I think there's a difference between yours and mine. Maybe it's for the communication between the nevigation system and the Changer, just a guess. Mine works like a charm now. You are lucky, you don't have to mess the back seat bolster to change the panel since you have alreay got the nevigation system. The installation instruction came with the parts althought clear but not clear enough. Hope you hav had the problem solved by now.
:thumb:
I too had me CD changer installed myself today. I don't remember there's a third plug. I don't have the nevigation system so I think there's a difference between yours and mine. Maybe it's for the communication between the nevigation system and the Changer, just a guess. Mine works like a charm now. You are lucky, you don't have to mess the back seat bolster to change the panel since you have alreay got the nevigation system. The installation instruction came with the parts althought clear but not clear enough. Hope you hav had the problem solved by now.
:thumb: