I know its a bit late in the day but.........
If you have a test meter, turn on your ignition and see if you have 12 volts measured between the centre contact of the socket and a convenient earth point, say the anchor point for the door stay. If you do it's an earth problem, so then check if you have earth continuity between the shell of the socket and your convenient earth point.
If you don't have 12 volts, then its a feed problem. Pull out the fuse and with ignition on, check if you have 12 volts on either terminal. With the fuse out, one should be live, and one dead. I imagine the fuse would be beween the relay and the socket, but I'm not sure. If you have power at the fuseholder, but not at the socket, then obviously there is a break in the wiring.
You are supposed to be able to get the socket out with "a special extractor tool". I can't get mine out without one, but I haven't tried hard! Hovever, if you undo the velcro at the top of the gear lever gaiter, you can undo the strong plastic clips and remove the gaiter. This then gives you good access to feel if the wires are connected to the socket.
Hope this helps, but have a good trip whatever.
Neil
