Join Date: Jan 2009
Exactly the same thing happened to me the other day.
At first the side light wouldn't work, then when i changed it i noticed that the dipped beam wouldn't work either.!
Turned out that in changing the side light i had broken the somewhat old and fragile earth connector located next to it, as i fumbled and swore at the side of the road in the fading light.
Curiously the main beam worked fine, and so i assume it has a separate earth in the connector.
Changing those bulbs is never a happy experience i have found...