Bought some Blue Coral headlight cleaner/restorer. Used it on daughters boyfriend's car and it really brought the lights back to life. Then used it on my Tahoe lights and it got rid of 99% of the hazing and yellowing. Always skeptical of these things but it really worked. Got a bottle of it from Autozone for $5.99.

 

I always use Mothers mag and aluminum polish to do my Mustang headlights. They look almost like new when I am done. That is doing it by hand.
Once I finally DIG thecar out of the Garage I will do it again and take before and after pics and post them.

 

I've got some of the Mothers but I wasn't aware that you could use it on lights. I would have thought it would scratch the glass. Oh, well the Blue Coral worked and it only cost me 6 bucks.