Famous 3 Way Switch Wiring Diagrams: Single Light Vs. Multiple Lights: Mastering 3-Way Switch Wiring: Single & Multiple Light Options 2024. Things get a bit trickier. Light after switches (power at the switch).
Web in this diagram, the electrical source is at the first switch and the light is located at the end of the circuit. Install boxes and run cables. Light after switches (power at the switch).