here is the search strig I would use on google
the part after the colon is the url of the IRV2 alpine coach forum.
One of the site found by the search is this: https://www.irv2.com/forums/f104/sca...ht-322200.html
Looking through search results this thread seems to be a good one: https://www.irv2.com/forums/f104/sec...de-494359.html
Here is what I bought: Optronics RVSL21P RV Light
Google the part name and you will find several sources for the light.
I replaced my scare lights last year. I could not find a recessed light. Onr the side with the awning, I kept the old base, converted it to LED, and used a new lens. On the other side I used an all new surface mount fixture.