If you have the original headlights they should be the rectangular glass sealed beams. They come out from the front. Looking into the assembly from the front you should see a metal frame around the bulb. The frame should have 4 screws visible, 2 on the top and 2 on the bottom.
The assembly should look similar to this:
https://www.c2cfabrication.com/colle...arts/headlight
This one is from an Oldsmobile. The exact location of the screws may not be identical, but they should be close. Winnebago painted the frame black over the original chrome plating.
If I remember correctly the fiberglass has a corresponding profiled areas to allow access for the screws to be removed. The heads of the screws should be phillips. They may be difficult to remove after 16 years. I would spray each one with a little penetrating oil before attempting to remove them.
After the screws are removed the frame and the headlight can be removed far enough to unplug the light.
As a side note check the left headlight as well. Our 2001 Adventurer on the Ford chassis had the optional daytime running lights. The running lights were actually the headlights on at 60% of normal brightness. We only noticed that both low beam headlights had burned out after the second one did. We didn't drive it that much at night, and when we did it was more often than not with the high beams on.
The outer lights have both high and low beam filaments. There are 3 prongs on the back of the bulb. The inner beams are high beams only and have 2 prongs on the back of the bulb.