Wow, I agree that is just crazy. Might be time for some modifications? Upgrade to LED? If you take the old light out you may be able to find a replacement by looking at the mount and the bulb dimensions. I looked at the Hamsar site and the light looks kind of generic to me. Check
https://blinglights.com/ to see if they have something similar or maybe https://www.etrailer.com/ I have bought stuff from both of these companies in the past and were good to work with. I also saw a Hamsar light on eBay, they said it was for a Winnebago but it may be the same as your. Looked it anyway by the picture.