Managed to get hold of the red grommet cable only to discover that the system doesn't recognise my iphone 4S. However, I tried another 4S and it works fine. Very confused, anyone else had connectivity issues with their iphone 4S? Mine is a 32gb and the other one is 16gb, does that have something to do with it? Seem to remember reading somewhere that there was a size limit, although that may have been for SD cards..