306 Turbo Diesel, bought some "nightbreaker" high powered bulbs - supposedly 90% brighter. They're certainly very bright, kept getting flashed by other motorists so thought I'd best adjust. Have just done this . . VERY easy . . just above the headlights there are a couple of "paddle" like upright flaps, simply turn the beam up or down using this paddle as a handle, no need to even take of the plastic lamp protector cover.
Hairy Frog, January 2011