So I was about to buy a pair of new headlights on ebay because my old ones had such thick yellow grime on them it was like there was no hope for them. I gave the wet sanding thing a try starting with 600 then 800, 1000, 1500 then buffed it with that blue magic headlight polish from autozone and WOW! Cost was around $15 total and took about an hour to do both lights.
Well done! When I have a little fog on my headlights, I grab my polisher and a little rubbing compound and have at 'em. That usually cleans them up nicely and takes about 15 minutes. Just something to keep in mind.
Great job. I did the same thing to mine last summer with similar results. I used some Plastix(sp?) from Meguiars to help protect them a little. Now I usually hit them about every 6 months with the 1000,3000, and polishing compound to keep em looking good.
As I was trying to say before I fat fingered the send button...The Sylvania kit is what I used about two years ago and it still looks pretty good. It's not crystal clear like they were when they first done but I has held up a lot better than I had expected. Definitely take your time and follow the directions for the best results. Also, I would highly recommend removing the head light assemblies. If they turn out to be stuck in three ball connectors PB Blaster is once again going to be your friend.