I have water dripping into the rear bath. It is exiting into the camper between the window frame and the interior wall skin.
I first removed and replaced the caulk around the window. That wasn't it.
My next suspects are the lights above the window. I haven't resealed those yet, but I don't see any obvious way for water to get in there as-is.
Other possibles would be the plumbing vent and the roof vent. The gasket on the plumbing vent is pretty old, so I have one on order (well, 2, one for the other vent up front). But that seems unlikely to have water go to the back window from there (?).
I can't get up to the roof air vent until I can get a taller ladder. But I'm not seeing anything immediately obvious in the photo. But it would seem water would could run down from there.
Other clues: I took off the bath room light, which is right above where the water is dripping, and the insulation and interior wall there are dry. Also removed the 12 volt
outlet to the left of the light, and that was also dry behind it. This makes me think it's more likely to be the exterior lights right above the window, as they are below the level of the interior light.
The amount of water coming in seems to be more than I would think those little lights could leak, though.