Having had the O/S headlamp fail last night, I picked up a spare today and just tried replacing it. No go, so I tried swapping bulbs from N/S to O/S - no power to the O/S socket, as both bulbs work in the N/S. A quick google indicates that this may be due to an electric control unit failing - poss. £250 + fitting/coding time.
Given that the car is almost 10 years old, 120K on the clock & only has to last a few more months until replacement, what's the downside of splicing the O/S socket to the N/S? Two Dim headlamps and an M.O.T. Fail? Or will it likely kill the control unit?
(Halogen bulbs, not fancy Xenon, so 12V 55W standard H4 units)