Slowly but surely my clearcab lights are now about yellow after only a year. Is there any way to puff/clean them??? They looked great at first but now look like

 

i think there is some lens cleaner for headlights, should work for the cab lights too.

 

Try some rubbing compound on them thats what I do for fadded head lights.

 

mothers has some good working lens cleaner. found it at wal-mart.

 

I use a medium rubbing compound and a wool bonnet on the lens material. If needed I will take off the first thin layer of plastic with 1500 grit or finer paper. What this does is remove the outside layer of plastic, that's what gets fogged or yellow. UV turns it over time.

 

Make sure you remove them from the truck to wheel them out so you don't trash the clear/paint on your roof.