johnb wrote:Removal of the lights is straightforward. Firstly remove the front boot liner if yours has one. The light units each have 3 ball-ended adjusters that push into plastic sockets in the headlight surround. To remove the lamp unit you just pull it gently near each of the ball-end adjusters. Once one has become detached the other two come out easily.
It's a bit trickier replacing them, especially the outer ones assurances obsèques, as it's difficult to see that the ball-ends are over the sockets. You push one home first, check the other two are over the sockets and then push until these have engaged.
Headlights are adjusted for correct position using these adjusters.
Can't help with sourcing of the light units I'm afraid as I haven't investigated that.
I propose to change radically engine. This is the most practical technique.