Condensation in fog lights.

Plastic lenses believe it or not are permeable to moisture. Halogen bulbs create enough heat and IR energy to drive the moisture out. Many OEM lamp assemblies have channels or coatings on the inside to channel the moisture to a place where it will not be seen. HID should generate enough heat to dissipate the moisture as well-
Most people do not believe this explanation- but as a plastics engineer I will tell you it is true!
 
I'm going to try putting a thin layer of silicone grease on the gasket. One side stopped on its own already. So I'm going to test several different things and see what works. Thanks.
 
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