Hi Guys,
I am suffering with a bit of the same problem.
I've tried polishing the lenses with gif and Pacer's headlight cleaner, but neither have worked.
I had a closer look at the lens and it it appears as if there is some sort of film that has been applied at some stage.
The wagon is ex-Japan so not too sure about what it might be.
Is it possible to buy replacement lenses or is the entire headlight assembly one unit?