Water leak

[Arkansas RV]

Just spent the week in Branson, Mo. rained for 3 out of 4 days. My coach is a DSDP 3565.
The coach was parked, level and not driven in the rain.
The roof has been sealed with Eternabond tape and all edges calked down to the drip line. All roof protrusions double sealed. Have never had any leaks of any kind since I’ve redone everything.
The area affected is the rear corner passenger side floor in the rear bedroom. We have a queen bed with built in nightstands in each rear corner/ side of the bed. Upper cupboards over the lower nightstands dry as are the walls. There is a window centered on each side of the bedroom. The window on passenger side leak free and all drainage hole s are open. The carpet under the night stand passenger side was saturated and extended 18” in front of it. There is no slide involved.
I originally suspected the window but basically dry under it. The wettest area is rear wall floor and side wall floor. So all that’s left is are the rear running lights and rear camera. On preliminary inspection they appear sealed. Anyone have any other ideas?? Sorry for being long but trying to cover all bases

[Arkansas RV]

I forgot to mention it’s a 2000 DSDP that has been gone thru top to bottom.

[NCC-1701A]

Since you've thoroughly inspected and can't find any obvious source, I would recommend getting it to a facility that does the leak testing by pressurizing the interior then soaping down the roof and walls to look for where air bubbles are escaping. This process may be able to pinpoint a hard to find leak point which could be some distance away from where it appears inside.

[bentjm]

Look at how the trim on the bottom of the side of the slide out is sealed with silicone.

I had the same problem on the opposite bedroom slide.

There was a small portion of the silicone that had peeled away. That little spot allowed water that ran down the side of the slide to run inside the trim and find its way into the coach. It would leave a damp spot in the carpet at the corner of the slide.

A bit of silicone and the leak was fixed.