I moderate a MH site and headlight glazing is a major topic, we have many “car guys” and also Ex Plastics engineers. Here is the gist of what we think is best.
All the kits are about the same. The easiest and cheapest is to use Off Deep Woods insect repellent. You want a super strength one with a very high concentration of DEET. This acts as a plasticizer solvent and it will remove the haze.
It helps to understand that when the headlights are molded, there is a thin film (microns) of a UV resistant coating applied and it is actually UV cured and formulated fo keep them bright and shiny. But, it is not a lifetime coating.
Once they glaze or haze over and you remove the deteriorated plastic, then they need to be polished and have some sort of protective coating.
OK….the drill is….spray the headlight with the OFF and quickly wipe it off. Some say it is perfect but I tend to leave a few streaks or such as the OFF dissolves the surface. Then I use something like McGuires Scratch X and lightly polish the lens and they glisten like a rap singers gold chains. Wash the headlights with any good detergent and rinse thoroughly and dry. You do NOT want any coating or residue for the next step which is a protectant.
NOW…the next step is to protect the lens as there is absolutely NO UV Protection. This is where it is dealers choice.
The best way, based on personal experience and also feedback from our members is to apply a 3M UV resistant coating. Some companies sell custom cut pieces. Specialty shops that do front “bras” or invisible filming can do it. You can do it yourself with a little practice, the trick is to get a template so that when you massage and push and pull and squeeze out the film, you get an even edge and covering. I had my MH headlights done about e3 1/2 years ago and the sun shines on them when setting in storage. They are still bright and shiny.
Next up, is spraying with a coating or lacquer and that is available. You just have to have some “spray paint” skills or “touch”. Amazon sells them so you can read the reviews.
If the above is not your thing, then buy a bottle of 303 Aerospace Protectant. Put on a light coat….wait a few minutes or maybe an hour and repeat. Some folks will do again the next day. This will last for at least 3 months. Probably the simplest….you then clean or touch up the headlights and remove any residue and record with 303. It is usually NOT necessary to do anything except spray a little OFF on a cloth and lightly wipe and polish.
Folks will try several layers of car wax….but that usually only lasts for a month. The new “Ceramic” coatings may work….but the jury is still out.
Thats my take and experience…..
