I made this critical effort, moved from the sofa and went to the garage to take the picture...
Ignore the additional wire coming out of the grommet - this is for fog lamp, I htink.
You see the plug in the lamp housing. The same plug is on the other side.
Grommet: A 113 997 03 81
The plug is not listed separately in the spare parts list, there is just the lamp with plug and wire:
A 113 820 00 62
No idea why picture attached upside down... sorry.