Headlights problems of the 1999 Ford Mustang

The plastic lens coverings for the headlights have discolored and turned milky in appearance. Proper illumination is no longer provided by the headlights. There is no way to clear up the problem. Multiple attempts using various cleaning or polishing agents have proven futile. This is an insidious problem, akin to having one's vision slowly get bad so you learn to live with it. The vehicle has only 66,000 miles on it, and the problem was apparent well before this mileage. Has not been replaced due to excessive cost of parts.

Exterior headlights are inoperable. When turned on, high beam indicator is on, but headlights are not on. High beams are also inoperable.

The headlights work fine, but what I've notice along with my Mustang my, mother's Ford taurus as well, the housing for the headlights apperas to be extremely pitted making it difficult to see out of them at night. I've tried to use a plastic cleaning solution for them, one from 3m seemed to help clean the headlamps greatly and improved the conditions some, but I've notice that the headlights are getting expotentialy worse. I am going to go speak with Ford durring the week and look at other headlamps on the new Mustangs. But I am mainly curiouse as to weather or not other drivers have reported that their headlamps look like the have a film on them or are pitted making it difficult to see out of. (I use a certified car cleaning solution to wash the vehicles. It's made by tutle wax and is supposed to be safe for all finishes).