Well, thought I'd try replacing the grommet today. I removed the trim and was able to unclip the connectors all ready to pull them through the old grommet, that's where I had trouble. The 2 connectors on the right hand side (looking from the rear) are too large to fit through the grommet, even individually. I found that you can disassemble the connectors, half of it slides out of the housing but there are 2 wires that are in the main body. I can only think that VW remove the 2 pins from the housing, thus allowing them to pull the wiring through the grommet. Obviously there is a way of removing these pins, must be a locking mechanism, but I can't see how .......