I had a commission by a Dutch customer who wanted to buy top tool and hammer eye drifts and I used the occasion to make this tutorial video as requested by many people including my friend Matt Marty and Facebook acquaintance Brett Miles.
In this video Kent Bergsma discusses possible reasons why your headlight may be building up moisture inside, and then demonstrates what he does to fix the problem on his own W220 chassis S500 Mercedes sedan. This is a common problem on many cars and the principles apply to many.