My head light has been getting condensation in it and recently just got a lot of rain now there is about an inch of water in the housing. Any ideas on what the problem is and a fix.

 

I've read where some members put the light in the oven to dry out or put a desecant (sp?) pouch in there to dry and then seal the bead where the glass meets the hosuing with a good quality silicone. That is if there are no visible cracks.

 

Bad seal around the lens. Use this method to open up the headlight and use silicone to seal them back up.

http://www.f150online.com/forums/art...eadlights.html