Forum Discussion
Good to hear it works for now. It will likely come back, though.
I don't know the exact lights used on your Lance, but I did search the web and found similar ones on the big river site:
https://www.amazon.com/Surface-Mount-Trailer-Truck-Chrome/dp/B015BNUKA0
These are surface mounted and the fastener screws are hidden behind the chrome bezel, which probably comes off with some force. There may be a notch for a flat screwdriver at the bottom edge.
However... the lights are LED. When they fail, it is often individual LEDs that go out - or they do not get electricity.
In my experience, the plug or some connector within the wiring is far more often the culprit. Can you unplug, check and clean the connectors and re-plug them . If that doesn't help - Do you have a multimeter & know how to use it?