I've seen this question before, but not yet found an answer - maybe it just can't be done! Maybe I've not looked hard enough???

How do I get the nearside (LH) rear fog light to work. I've put a bulb in the socket, the power connector has a full set of 6 wires, but there must be something that I need to do somewhere else? Is a connector, a fuse, some magic with VAG-COM. Or a diy cable across to the RH light and splice the two together? I've got a 2004 A4 saloon.

Best wishes for New Year - be good, drive safe, have fun.