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Hi -
The A6 I just bought didn't have a changer in the boot. This was annoying because it didn't have a CD player in the dash either, just the otherwise-adequate concert headunit. I managed to get a connects2 adapter, a long cable and a kenwood 6 disk changer. I plugged it all in, and the changer powers up, dutifully ejects and makes whirring-noises as it should. The headunit however, doesn't recognise it and doesn't let me select "cd" when I press mode.
In order for the changer to work, which wires need to be where? The situation has been further confused by a hands-free phone kit which was plugged into the back, but now no-longer is as it didn't work (was always on "telefon" mode). Are there some wires from the vertical (relative to the 4 horizontal) multi-plug in the back of the head unit that need to remain\be connected in order for it to work?
And what is the purpose of the plug coming from what seems to be the casing itself? Is it just an earth or does it serve some higher purpose?

Thanks in advance to anyone who can help!
 

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I found this info in my Bentley's for the U.S. spec 2.8 Concert with CD Changer.
Pin Description Color
1 RCH Red
2 RCH Shield
3 LCH White
4 LCH Shield
5 Changer Ground Brown
7 ACC Yellow
9 Clock Black
10 Battery Blue
11 CH Data In Orange
13 Ch Data Out Pink

It sounds like everything powers up OK it's just that the changer is not talking to the head unit. Maybe the data in and data out are swapped?
 
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