Learn how to wire a 3-way switch to control multiple lights with a wiring diagram. Find step-by-step instructions and illustrations to help you with your electrical project.. The 3-way wiring diagram is a widely used electrical wiring arrangement that allows you to control a single light fixture from two different switches. It is commonly used in staircases, hallways, and large rooms where multiple light fixtures need to be controlled from different locations. In a 3-way wiring diagram for multiple lights, the power source is usually connected to the first light.
The steps above describe installing 3-way switches and include a 3-way switch diagram for a single light fixture. If you intend to add multiple lights with a 3-way switch - Consult the 3-way switch diagram for multiple lights below:. Learn How to Wire a 3-Way Switch with Clear Wiring Diagrams, Step-by-Step Installation Instructions, NEC Codes, and Troubleshooting Tips.