Does it matter which wire goes where on a 3-way light switch?
It makes no difference which traveler wire goes to which traveler terminal on the switch; the traveler terminals are interchangeable. ... The other wires in a circuit with 3-way switches are the neutral (usually white) and ground (usually bare copper or green).
What are the three wires on a 3-way switch?
With a three-way switch, three wires connect the pair of switches—two black “traveler” wires and a third “common” wire. When the circuit's power is turned on, any of these may be “hot,” depending upon how the switches are toggled.Jul 8, 2021