Jim,
Not sure who the mfr was, but after market units appear to be available on eBay:
e.g. http://www.ebay.com/itm/BEAVER-COACH-PATRIOT-2006-2007-RIGHT-FRONT-LIGHT-HEADLIGHT-HEAD-LAMP-RV-/360575697030?hash=item53f3fc8086&item=360575697030&pt=Motors_RV_Trailer_Camper_Parts_Accessories&vxp=mtr
Steve