Hi Rex. I followed this guide ----> http://forums.vwvortex.com/showthread.php?4938269-OEM-MKVI-Climatronic-on-a-MKV-on-a-RNS-510-Screen-installed
I just swapped the wires of 16 and 20 around. I decided to cut and resolder as the wires are of a different thickness so even if you release the pins the will not go back in the other plug. This was only in the A connector.
Yeah mine is a 2008 model. The ER panel was the panel that gave me the 'missing message' fault although it seemed to work fine. I settled for the BC panel. The only fault I get now is because I don't have the air quality sensor connected.
No issues with the BC panel. Everything works as it should. Hope this helps mate 
Hi Matt and thanks for the reply!
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I saw that thread (a a few other ones) but I though that for your car it was easier (the car in that thread is 2007).
Did you do the
First and
Second Step (as described in that link)?
I have some spare A, B and C connectors and I saw that wire 20 has a different plug but it seemed to be of the same thickness with the rest (unlike 19 for example). I also think that cutting the wires is the way to go since modifying the plugs is much more complicated. Did you leave the original pin 20 unplugged?
I also have the air quantity sensor but I think installing it will be a complicated job. I'll see how it goes...