Strange leak at LED ceiling light

[MJP]

Anyone out there ever seen this problem? Our 2025 Renegade Valencia 38RB has an LED ceiling light that collects a few drops of water when driving during a rainstorm. It is the ceiling light located between the half bath and pantry. Our local Renegade dealer put our coach in their wash bay and drenched it. No Leak. They checked all the roof seals and could not replicate the problem. Washing the coach will not reveal the leak. But driving during a rain storm reveals the leak every time. Any suggestion on possible entrace points?

 

[Boat Bum]

So the driving force is what is doing it so I would concentrate on areas forward of the light. Water is so insidious, it could be leaking no where near the light yet that is the egress point.

 

[DennisT]

If when driving I’d start with the front cap looking for where it could get in.

Will run inside until it finds a spot to come out so could be anywhere but I’d start there on the cap seals.

 

[Jim]

Anyone out there ever seen this problem? Our 2025 Renegade Valencia 38RB has an LED ceiling light that collects a few drops of water when driving during a rainstorm. It is the ceiling light located between the half bath and pantry. Our local Renegade dealer put our coach in their wash bay and drenched it. No Leak. They checked all the roof seals and could not replicate the problem. Washing the coach will not reveal the leak. But driving during a rain storm reveals the leak every time. Any suggestion on possible entrace points?

Yes, my London Aire did the same thing. Only when we were driving in the rain as I recall. Turned out the water was coming in from the front, probably the ront cap as mentioned by @DennisT. I never found it, but Newmar did. Was the strangest thing to see water dripping down out of the puc light.

 

[Rollin Ollen]

Anyone out there ever seen this problem? Our 2025 Renegade Valencia 38RB has an LED ceiling light that collects a few drops of water when driving during a rainstorm. It is the ceiling light located between the half bath and pantry. Our local Renegade dealer put our coach in their wash bay and drenched it. No Leak. They checked all the roof seals and could not replicate the problem. Washing the coach will not reveal the leak. But driving during a rain storm reveals the leak every time. Any suggestion on possible entrace points?

We had a cracked roof marker lamp that caused the same problem for us. I had no idea the lamp was the problem until I changed it. Leak has been gone ever since. I hope your problem is a easy to fix as ours was.

 

[TheLooks]

That was going to be my suggestion. I have fixed so many that it is one of the first things I look at now.