I replaced my light fixtures with these pancake lights on Ebay. Ebay listing # 171471727360 RV LED light, 12 volt
ceiling pancake with dim/off/bright settings. $9.95 with free shipping.
I installed these over the sink, in the bathroom and under the shelves over the beds in my 77 Argosy. Bright is 280 lumins, dim is just right for a night light. I found a similar fixture with only on/off for the ceiling but these would work just as well. We are really happy with them and a lot more light than the originals.