3 Way Light Switch Wiring Common. Three way switches are commonly used to control a light fixture from two different locations. Connect the two remaining traveler wires to the two brass or light colored screws.
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Connect all ground wires as previously described if not already completed. Connect the two remaining traveler wires to the two brass or light colored screws. The black line wire connects to the common terminal of the first 3 way switch.
The black line wire connects to the common terminal of the first 3 way switch.
Connect the wire marked common to the black or dark colored screw. Traveler wires are interchangeable on each switch. Three way switches are commonly used to control a light fixture from two different locations. Connect the two remaining traveler wires to the two brass or light colored screws.
