Hi there! Sorry for the delay in welcoming you to the forums. I'm not sure how to remove the cover but it doesn't hurt to have a spare bulb. Maybe your service department can help.
And congrats on your Salem trailer too! Hope you enjoy your unit as much as I have mine.
Great choice for "Living within my means" and camping for one...
2011 Salem Cruise Lite 20RBXL & 2011 Toyota Tundra Dbl Cab
Camping History: 45 Trips / 133 Nights / 3736 Miles
FRF Social Group: Campers of the West