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Connect four switches

To control a light from four locations, use two 3-way switches at the ends and two 4-way switches in between, wired sequentially with traveler wires.Components Needed
  • Two 3-way switches (one at each end of the circuit)
  • Two 4-way switches (placed between the 3-way switches)
  • 14-3 or 12-3 NM-B cable (includes black, red, white, and bare ground wires)
  • Electrical boxes for each switch and light fixture
  • Wire nuts, screwdrivers, and wire strippers
  • Voltage tester for safety
Wiring Overview
  1. Turn off power at the main breaker and verify with a voltage tester to ensure safety .
  2. Connect the incoming hot wire from the breaker to the common terminal of the first 3-way switch.
  3. Run traveler wires (typically black and red) from the first 3-way switch to the first 4-way switch.
  4. Connect the 4-way switches in series: each 4-way switch has four terminals, two for incoming travelers and two for outgoing travelers. Flipping a 4-way switch reverses the connection between the pairs, allowing control from multiple locations .
  5. Run traveler wires from the last 4-way switch to the second 3-way switch.
  6. Connect the common terminal of the second 3-way switch to the load (light fixture).
  7. Connect neutral wires (white) and ground wires (bare or green) appropriately at each switch and fixture box.
Important Notes
  • Traveler wire colors may vary depending on cable type; black and red are standard for NM cable, but other colors can be used with conduit .
  • Parallel wiring ensures all switches can turn the light on or off from any location.
  • Safety first: always confirm the circuit is de-energized before touching wires, and use proper wire nuts and grounding .
Diagram Reference

A typical four-switch setup follows this sequence: Power source → 3-way switch → 4-way switch → 4-way switch → 3-way switch → Light fixture . This configuration allows the light to be controlled from all four switch locations reliably. For visual guidance, diagrams and video tutorials are available online to illustrate the terminal connections and traveler wire routing .

Connect four switches

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