Hi and welcome from Michigan as well.
Here are a couple of diagrams that show the path of the heater switch feed wire from the fuse panel. It's a 14 gauge brown wire shown by the red arrows.
Here is the wire at the fuse panel.
Here is where it ends at the heater switch.
If you have power at the fuse then you should have power at the switch. If the previous owner cut the brown wire and switched it directly to the orange wire then you will have to redirect the brown wire back to the heater switch as well as the orange wire.