Today I had to check my bulbs as the warning light came on, turned out to be one of the reverse bulbs. Anyway, whilst checking all the bulbs I noticed that only my drivers side rear fog light was working, I changed the bulb but it still wasn't working. On closer investigation I came to the conclusion that I am only supposed to have the one! The passenger side rear light cluster has one wire less than the other side. Has anybody else noticed this too? I can't believe MB could be so stingy by leaving out one wire for the other side!!! Surely not.