Wide Display Cluster Retrofit

[snapdragon]

It's OK, I like that. Yes, I was trying to plug it in blind and had a sinking feeling as it was obvious the connectors were a mismatch Grrrr!
But then on closer inspection it was a blanking plug with Audi logo and numbers on it. This was on the pigtail hanging from the new cluster - as though this connector was not used on the donor car. All I can think is that on later cars with MMI 3G, there is a different cable to the 0.0 & CHECK buttons that connects to somewhere other than the cluster.
Maybe the MMI? I know the SETUP button is gone from the HVAC on those as the MMI3G has the HVAC setup as a menu instead. I was wondering if CHECK had moved there too with the service info.

***EDIT - I'm now thinking it is just the plug's housing, it must have split/broken and been left inside the socket.