Just had to change my whole lamp unit.
Easiest way was to jack it up, so you can get proper access.
Undo 2 screws on the plastic cowel where it is screwed to the front spoiler.
You can then pull it down so you can get to the fog lamp.
Piece of cake then, but you will struggle if you cant get right underneath.
By the way, its them bloo** star screws again!
