On my 2021 Spirit Deluxe, those two fixtures are at the very end of a wiring string that runs under the carpeting on the wall behind the
microwave oven compartment.
Casita uses "quick-splices" to connect the fixture wires to the DC supply wire - and these splices aren't always installed correctly.
So, I would suggest poking around to see where your splices are (you may be able to feel them through the carpet), and confirming that they're still making good connections.
If you have to cut through the carpet to access them, use some contact cement to close up the cuts after you're finished.