Rear clearance light mount

[dcheatwood]

Anyone who has a class c with oval marker lights on top of the rear wall, check to see if they're mounted correctly. I had two go out not long after buying my 2018. I just got around to replacing them. Found on sale for $13.xx. while doing the work I noticed the two that burned out (led) were mounted upside down. The three still working were mounted right side up. Each lense has a small recess on one edge to pry the cover off to access mounting screws. When mounted upside down, the hole is facing upward allowing rain to get in to the leds. They short and rust out quickly.
Check yours and see if the writing on the lens is upright or not. If not, pop it off, remove the 2 screws, then turn the light right side up and recover.

 

[brucemc]

Cute.

I had a different issue on one of my rear clearance lamps:

You can barely see where they mounted the lamp a bit high in the hole:

Removing the fixture shows the extent of the issue:

Water intrusion is enough of an issue without the factory providing open access...

 

[OkayJim]

Can you tell me how they were mounted? Here is my story:
Do you know the brand? My 2019 Sunseeker 2350LE has similar marker lights. I tried taking them off today, two screws out, but I cannot pull the assembly away from sidewall. I am afraid to pull hard, I would think there is nothing inside but wires, but surely they are not so short as to not pull out for service. I was going to replace them with Furrion side markers with cameras but will leave them alone if I can't get them loose. Thanks.

 

[brucemc]

Mine didn't have caulk behind the fixture, nor did they have a thin caulk seal around the top and sides.
Try using a putty knife to cut the caulk, if any. It may be the foam gasket is stuck to the sidewall.
I have a couple of bent putty knives; the blade can be held flat against the surface. They are available at any good hardware/big box stores:

They will come off with some persistence! Be patient...

 

[OkayJim]

Thanks. They are not stuck with the light itself, I can spin it 180 degrees, Seems they are bound up by wiring, or some weird retainer nut (doubtful that is it). I will give it another go. I just don't want to end up with broken wires, inside the sidewall i cannot get to.

 

[brucemc]

That's odd, like they are embedded in foam insulation.
If they are built like mine in the images, you should be able to separate the base from the socket, which will enable you to better access the situation behind the fixture.

 

[Larry-NC]

Anyone who has a class c with oval marker lights on top of the rear wall, check to see if they're mounted correctly. I had two go out not long after buying my 2018. I just got around to replacing them. Found on sale for $13.xx. while doing the work I noticed the two that burned out (led) were mounted upside down. The three still working were mounted right side up. Each lense has a small recess on one edge to pry the cover off to access mounting screws. When mounted upside down, the hole is facing upward allowing rain to get in to the leds. They short and rust out quickly.
Check yours and see if the writing on the lens is upright or not. If not, pop it off, remove the 2 screws, then turn the light right side up and recover.

Found the same thing on DW's 2002 Northwood Nash when I was replacing all the marker lights in about 2013 because the color had bleached out. Water had gotten into about half of them because the tiny drain was on the TOP side!

 

[Larry-NC]

Can you tell me how they were mounted? Here is my story:
Do you know the brand? My 2019 Sunseeker 2350LE has similar marker lights. I tried taking them off today, two screws out, but I cannot pull the assembly away from sidewall. I am afraid to pull hard, I would think there is nothing inside but wires, but surely they are not so short as to not pull out for service. I was going to replace them with Furrion side markers with cameras but will leave them alone if I can't get them loose. Thanks.

There's plenty of slack. The wiring goes on before the siding. When you wiggle and gently pull the wires, the crimp-on wire nuts will come through the hole.

A heat gun will soften the butyl tape (a kind of putty) and free the lights from the siding.