Folks, if your headlights barely let light shine through go get yourself the Cerakote Headlight Restoration kit. It's available at WalMart for around $17 and does an absolutely amazing job of restoring them to like-factory new. Just did my '04 MC40 and they came out amazing.

 

I have to concur - Cerakote does wonders for headlights. Their ceramic coating also restores the dark black on the plastic trim also. Lasted almost 2 years so far. Great products.