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Mine was the same way and used Maguires headlight restore. I bet that any product like that would work good. Another option is LMC. They have a replacement lense for about $15.
Pull the lens out and wet sand with 1000 grit, then 1500, then 2000. Buff with polishing compound. Gets it clear as new. I've used this on plastic headlight housings with great results.
Pull the lens out and wet sand with 1000 grit, then 1500, then 2000. Buff with polishing compound. Gets it clear as new. I've used this on plastic headlight housings with great results.
I used Mequiars Plastix, probably the same as headlight restorer as it works on them too Just applied it like you would waxing a car and it worked quite well
600 or 1000 seems like a bit of overkill to me, but then I haven't worked on this exact issue before. I've done headlight restoration for nearly 20 years.... long before there was actually products marketed for it. So I've played with my share of clear plastic, sand paper and polish. Even did a couple instrument clusters a few years ago.
If you need to wetsand, 2000 should be enough. Using a more aggressive grit on clear plastic makes it much more likely to end up with some scratches still visible once it's polished out. If you happen to have 3m trizact pads (the soft grey 3000 girt ones) then definitely use that prior to compound/polish. They leave a nice "finish" that is pretty easy to polish out crystal clear.
Try compound/polish before using any abrasives though. A cheap polish that works really well is Meguiars plastic headlight restore that's in the white bottle, about $5 at walmart and most auto stores.