Cusser
+1y
Here in Arizona, very common for plastic headlight covers to get hazy because of the sun. Even my oldest's 2008 Mazda CV-7 has this issue. Ever price replacements - pretty expensive, up to several hundred dollars !!!
Anyway, here's what I do right now, on my 1998 Frontier my youngest drives, on my 2005 Yukon, and did on our 1994 Suburban:
I use regular car wax on them, about every three months, takes 5 minutes. The results were unbelievable the first time I tried it, do one healight cover at a time. Car wax has small amount of abrasive it it, does the job. There are kits with abrasive balls or discs that go on a drill or polisher (Autozone, O'Reillys, even Harbor Freight has these), some kits contain secret liquids to put on afterwards.
Obviously, our B-trucks have good-old fashioned glass sealed beams, don't need this.