If a Scenic Cruiser:
Have you tried S Sterling or for a Peterbuilt?
I have researched this (among many, many things for our Scenic Cruiser) though I have not replaced any Headlight assemblies on our Coach yet. One is fogged, one has moisture in it. As you know, they are glass. Both are functional and we also have additional driving lights.
Here is from my research, if you purchase/replace/repair, please follow-up.
Headlights
http://www.irv2.com/forums/f258/head...am-165312.html
http://www.gsowners.com/forums/showt...?t=2315&page=2
http://www.irv2.com/forums/f258/gs-s...hts-81348.html
http://www.ssterlingco.com/
http://www.irv2.com/forums/f110/wher...ts-178300.html
http://www.irv2.com/forums/f110/1994...ed-126158.html
.