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The switch manufacture uses servo wire for their switches, the Orange or White wire does nothing. The Wire coming out of by itself goes to the RX or in your case the servo tester. On the other side the wire with the same kind of END goes to a charger, the other wire with a different END goes to the Battery Pack.
The two wires with the same ends are actually the Female End and the one for the Battery Pack is the Male end.
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