If you have a Class A gasser from the mid-2000's (I don't know about others) you have 5 recessed clearance lights on the top of the front cap. Most likely these have been re-sealed at one time or another, which probably means some quick silicone sealant around the seams.
But if you have to remove the lights to replace bulbs or any other reason, use some caution. The light is screwed into a metal frame that has been epoxied into the light cavity which is molded into the fiberglass cap. This was not the greatest design (actually a pretty bad one), but it is what Winnebago did.
The problem is the metal frame.
It may be badly rusted, and you may be tempted to remove and replace it. DON'T. The metal frames are no longer available. I know. I found out the hard way.
I took out the two worst rusted ones before I learned they just are not available anywhere. So I had to recondition them as much as possible and epoxy them back into place. I used JB Weld SteelStik.
Here are before and after photos from my 2006 Voyage - not pretty, but what you see is what you get.
Here is the light cavity with the metal frame removed and before the cleaning up, which includes removing the old epoxy and all the old silicone sealant.
The frame has been re-attached with epoxy. The epoxy was used liberally to strengthen a very rusted and weakened mounting frame. The next step will put a bed of sealant around the inside edge of the cavity and replace the light.