Yellowed lens on headlights for 98JGC

And the lamp assemblies are not cheap.

It's cheaper to do it yourself.

I use a buffball with flitz, but there are many other products out there. McGuires makes a good kit.

I got a full set, both lights and park/turn signals for just over $50 from Amazon. Even fit just like the originals.

You can get a protective coating..... about as easy to just swap them.

Harbor Freight sells a cleaning kit for $12, sometimes on sale for half that....locally the jeep dealer here wants a $100 to clean them...Larry

I need to get one of those kits and do the lenses on the tow pig.

If your not too particular, McGuires scratch remover compound will also clean them up for a while. After all it's also just a mild abrasive.

The tricky part is using a soft enough pad and keeping speed down so you don't heat up the plastic lens, as if you do that will leave grooves in it. Balancing that with the desire to get it finished before the millenium ends is tricky as is just about any plastic polishing job. The kits mostly have a fairly soft polishing brush and dont allow excessive pressure by making the polisher out of foam. They also tend to snag on the aiming bumps.

J. C. Whitney and Amazon both have replacement lenses that are much cheaper than the kit plus half a day of polishing. They also seem much brighter as you can see the bulb from the front.

The tricky part is using a soft enough pad and keeping speed down so you don't heat up the plastic lens, as if you do that will leave grooves in it. Balancing that with the desire to get it finished before the millenium ends is tricky as is just about any plastic polishing job. The kits mostly have a fairly soft polishing brush and dont allow excessive pressure by making the polisher out of foam. They also tend to snag on the aiming bumps.

J. C. Whitney and Amazon both have replacement lenses that are much cheaper than the kit plus half a day of polishing. They also seem much brighter as you can see the bulb from the front.

There are coatings available for UV protection - similar to the thin stuff Herculiner supplies to keep black black for more than a month. I used one a couple of weeks ago after we cleaned up a sign cover over at the church - found several choices at the glass place that we bought the new cover from. Lot cheaper than Lexan but pardon my increasingly short memory as I'll be darned if I can remember the name of the stuff.

I'd use good old liquid Turtle Wax (but not the abrasive formula).

Or, after you get them restrored, everytime you wax your vehicle, wax all the lenses and buff carefully.

I've done it for years on my own cars and used the trick to help old lenses in a dealership wash rack job I had.

Basic automotive clearcoat will work. Last time I just used a bit of auto wax (McGuires) and it's working well so far.

You might be thinking of ClearShield or ClearJet.

ClearShield it was - this place even recommends it for use over Lexan claiming it extends the use on outdoor signs by at least a couple of years.