Learn how to wire a 3-way light switch with clear diagrams and step-by-step instructions. A 3-way switch lets you control a light from two locations and is commonly used in hallways, stairways, and large rooms.. Master the setup of a 3-way light switch with our easy wiring diagram. Learn how to connect travelers, common wires, and power for seamless multi-switch control.
3-Way Switch Wiring Diagram Line to Light Fixture In this wiring process power supply first connected to the fixture then one switch and at end at another switch.. A variation of the above three-way and 2-Way switch wiring is to bring all cables into one wall switch box, as depicted in the three-way switch wiring diagram below, and branch off from there to each switch and light fixture.