Caporegime
- Joined
- 11 Mar 2005
- Posts
- 32,247
- Location
- Leafy Cheshire
Rip them apart and fully clean inside and out. Done this on both my cars and the difference is much better than you could hope to achieve with any fancy bulbs.
Have you done this on plastic lense units Clarkey?
If so you use the oven trick, what did you seal them back up with?