Lots of different wiring designs in lots of different RV's. Most are simple electrical circuits, so use normal electrical troubleshooting methods.
After replacing a blown fuse you may find the new fuse blown. The normal procedure is to find the cause of the blown fuse first, then replace the fuse.
Loose connectors on the fuse panel, the control panel, or sensors
Worn or burned spots on insulation
Defective switch on panel
Defective device connected to panel
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Paul Bristol
Kodiak Cub 176RD
Nissan Pathfinder 2015
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