The light will glow as it is a 12 volt device with current limiting so nothing should get hurt.
The brighter the light the lower the resistance.
Do not wiggle things as you want to see a change on your action.
Unplug things assigned to the fuse and when the light goes dim you have found a possible cause.
Just grab a clearance light assembly as it has small bulb and wires.
Solder the wires to the ends of the blown fuse and plug it in.
Tony & Lori
1989 Country Coach Savannah SE