F250 Upfitter Switch Wiring Diagram 2024. There is a diagram floating around showing what each upfitter wire does. If not, looking at building or buying.
Looking at the schematic below, i believe that if you remove the plastic slider cover for the 5amp fuse inside the upfitter fuse box that changes the 45 amp switches between key. Refer to the vehicle’s owner’s manual or consult with a professional if you are unsure.