Where's the leak?

[Deuces]

I don't know where the leak is here. The toilet area feels solid. I checked around the fuse box and charger/converter area and can't find where the leak is that's causing this damage. I have no idea what to do next.. Keep tearing up the floor and see what I can find? There are no apparent leaks from above. Everything appears to be solid except this one spot in the floor. This is coincidentally right above the black tank, if that matters.
Ideas what to do next?

I apologize for the sideways pictures... Not sure why it did that but would gladly take instructions on how to properly post images.

2006 Jay Feather 232
That's a pop out bed in the rear. No apparent leaks.

 

[RogerR]

Is that a window just above the bad spot? Leakage could be going inside the wall and down into the floor. Water should have done more damage near the toilet if that is where it is coming from.

 

[Deuces]

Is that a window just above the bad spot? Leakage could be going inside the wall and down into the floor. Water should have done more damage near the toilet if that is where it is coming from.

Thanks for the reply, Roger. That's actually a pop out double bed. I let the bed out and don't see any leak around it as far as I can tell. It's very difficult to see inside that space right there unless I take it apart, which I suppose I may have to do to repair this anyways?

Also, it looks like they missed a joist when building the frame. There's a string marker like there is 12 inches across but no joist there. Not much support.
Here's a pic of my rear.

 

[Tunce the traveler]

Check your marker lights, sewer hose opening, power cord opening. Do you have gutter extensions or does the rain just run down the side. The water will run down the back into the gutter above the tent opening door and straight down into that rear marker light.

 

[Deuces]

Check your marker lights, sewer hose opening, power cord opening. Do you have gutter extensions or does the rain just run down the side. The water will run down the back into the gutter above the tent opening door and straight down into that rear marker light.

Thank you for the response.. I don't mean to sound totally incompetent, but I believe I'm going to have to open up that sealed compartment containing the fuse box and converter/charger to have better access to see where the water is coming from... I do have plumbing lines that go through that compartment also which may have a leak, and I just can't see it without disassembling that panel/compartment. I'll do in the morning.

Yes, there's an outside gutter along the roof towards the rear. And I'll check around the tent opening again in the morning and get a better look at it.

 

[Tunce the traveler]

I , and I bet we would still Do what your doing to get to the bottom of this. It comes in from the strangest places.

 

[twoadventureaddicts]

I'm going to be doing this after the end of the season and next spring. Finding the leak will be tough part, as the repairs are seeming more and more common and will allow me to upgrade the flooring to an engineered wood product which I'm excited for. Only issue for me is my floor is soft from the entrance doorway under the wall and into the bathroom of my 2006 19H.