OEM Ipod adapter for 06' GTI

I recently purchased what appears to be an OEM IPOD adapter for my 06 GTI with the premium 7 head unit. I cannot seem to get it working, however I am not sure if I am installing it correctly or not. I have attached some pictures of the unit and it's connections. The blue 12 pin connector looks to replace the current connector on the radio., however the one (wide) pin connector i am not sure what to do with. I've tried both 12 pin sockets with the connector on my unit, however to no avail. Could someone adivse?? I really want Ipod connectivity.