No Marker Lights

[fhmac]

2017 BayStar 3124 no longer has any working marker lights. Nothing in front; nothing in back and nothing along the sides. I have checked the firewall F4 fuse and it is good. Headlights and tail lights are all working. Any ideas? Experienced help would be appreciated.

[mbrooking]

I just replaced my side marker lights... If mine are any indication, Newmar doesn't do a good job of sealing the lights from moisture. The wire on mine had just corroded off the light fixture. Mine were also located in the rear wheel well, so when driving in the rain...
Anyway, I ended up ordering new lights from Command. They also had a gasket that Newmar didn't use. It looked like they used a liquid gasket material. I used some silicone to seal the opening from the gasket to the light. Hopefully that will stop the water penetration.