Are you sure the problem isn't caused by corrosion on the switch terminals, battery posts, loose or corroded fuse?
On the other hand, 21 years may be the lifetime of a switch like that. Yep, take that picture before disconnecting wires. Disconnect battery wire from battery post and turn off power in on shore power to avoid sparks or blown fuses.
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2017 SLX 195RB
2021 Jeep Grand Cherokee Summit L 5.7L V8
Andersen WDH hitch, Renogy 100 AH Lithium &
200 Watts solar panels from Renogy
Prev. '14 Jeep Grand Cherokee Overland, gas 3.6 V6
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