For more information about these circuits and troubleshooting tips for 3-way circuits, check below. Wiring Diagram 3 Way Switch with Light at the End. In this diagram, the electrical source is at the first switch and the light is located at the end of the circuit. Three-wire cable runs between the two 3-ways and 2-wire cable runs to the light.. Wiring a 3 Way Switch with Multiple Lights. In this circuit, two light fixtures are shown but more can be added by duplicating the wiring arrangement between the fixtures for each additional light. Here the source is at the first switch, SW1, and 3-wire cable runs from there to the first light, L1.
Before we get to wiring diagrams, here is how the 3-way switch terminals are color-coded: Green for Ground Terminal. Brass color for Traveler Terminals. Black for Live (or Hot wire). And this is what you will need for 3-way switch wiring: Wires. Black (Live or Hot Wire) Green (Ground Wire) White (Neutral or Common Wire) Red (Terminal Wire) Two.. In a 3-way wiring diagram for multiple lights, the power source is usually connected to the first light fixture, and then the hot wire is extended to the second and subsequent light fixtures.. Switch 1 is usually the one located at the bottom or entrance of the circuit, while switch 2 is usually located at the top or exit of the circuit.