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Ford Explorer Community - Maintenance - Modifications - Performance Upgrades - Problem Solving - Off-Road - Street
Explorer Forum Covers the Explorer ST, Explorer Sport, Explorer Sport Trac, Lincoln Aviator, Mercury Mountaineer, Mazda Navajo, Ford Ranger, Mazda Pickups, and the Ford Aerostar
The brown wire is for the magnetic clutch coil which would be high amperage. I assume without further investigating that the switch wouldn't be rated for the amperage. hence using the relay with low amperage to control higher amperage circuit...
