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Are the plastic headlight covers clear or not. Typically after a few years they have a pitted surface which does not let the light through. They need to be polished if that is the case. Many auto parts stores sell the product to do this.
Novus products worked for me. There are three strengths. No. 1 is a general spray cleaner. No. 2 is a fine scratch remover that requires some elbow grease. I find rinsing it as I work it in helps speed up the process. The yellowing and small scratches are caused by ozone and sand blowing in the air. This product won't make it factory new but it will give a much better cleaning than any other product I've found. I've saved many friend's the expense of changing their headlights. Don't use windex or dishsoap on headlight plastic. They have ammonia in them and causes microsopic pitting and fractures in clear plastic. I bought my Novus products on line, saved gas running around trying to find it.
Most Auto Stores sell a headlight solution that cleans the fogginess of your headlight. Assuming your headlight looks dirty and cloudy as would a pool, a simple solution is to pick up the cleaner at any auto place. That is a lot cheaper than buying a new headlight.
You'll need the following. Painter's tape or Masking tape, 2000, 2500, 3000 grit
sandpaper, bucket of water, headlight polish (PlastX, etc) and microfiber cloths
Mask off around the light so you don't have to worry about sanding your paint if your hand slips.
Soak the sand papers for at least 15 minutes. The more water the better
Using the lowest grit, start sanding in ONE DIRECTION ONLY,(side to
side). Keep the sandpaper wet and dip it in your bucket of water
frequently. Now dry the headlight and it should look all hazy
Switch to the next finer grit, and repeat the step above, but this time
go in the OPPOSITE DIRECTION (up and down). Keep using water Dry it again, and it will look better than the first time.
the process again with your finest grit. Again, OPPOSITE
DIRECTION with plenty of water. Dry it off. It should look relatively
new at this point. Remove the tape as it will contain bits of grit from
Generously apply the headlight polish in a circular motion to the headlight
Using your microfiber cloth, rub off .. repeat several times with FRESH
rags until the polish is dry and gone.
The lens is not removable. Go to Autozone and get a kit to retore your lens to clear again. About $20. You use one chemical to remove the head coat and and another to sand or clean the lens until clear. Then re-apply the hardcoat. Takes under 2 hours. Follow directions carefully
have you tried the do it yourself fix? It's a kit you can buy from almost any parts store or even some Walmarts. Almost like sanding it down and then a liquid polish goes on. . . .worked great for me. Cheaper too!
Wet sand the light cover with 2000 grit sand paper.Use a hi speed buffer with an aggressive rubbing compound at around 2000 rpm. It'll make you light covers as clear as they were new. It may take doing this a couple of times depending on how cloudy your light covers are.