Connecting a light to a two-way switch (also known as a hotel switch) allows you to operate the same light from two different locations — perfect for hallways, staircases, or large rooms. In this blog, we guide you step-by-step through the process to safely and neatly install lighting on a two-way switching system.

Tools you’ll need

Before you start, gather your tools to make the job easier and safer.

- Voltage tester
- Wire stripper
- Screwdriver
- Screws and wall plugs (if mounting a new fixture)
- Optional: Drill with hammer function
- Power screwdriver
- Pencil for marking

Step-by-step installation guide

1. Switch off the power

Turn off the power to the lighting circuit at the main breaker. Use a voltage tester on the existing switch and light fitting to confirm there is no current before working on the wiring.

2. Understand the two-way switch wiring

In a two-way system, each switch has three terminals:
- COM (Common)
- L1
- L2
Two “traveller” wires connect L1 and L2 between both switches, while the COM terminals connect to the live feed on one switch and the switched live to the lamp on the other.

3. Connect the first switch

Connect the incoming live wire (phase) to the COM terminal of the first switch. Connect the two traveller wires to the L1 and L2 terminals — it doesn’t matter which traveller goes to which terminal, as long as they match at both switches.

4. Connect the second switch

At the second switch, connect the two traveller wires to L1 and L2 (matching the first switch’s configuration). The COM terminal on this second switch will connect to the switched live going to the light fitting.

5. Wire the light fitting

At the light, connect the switched live from the second switch to the live terminal of the lamp holder. Connect the neutral wire from the power source directly to the lamp’s neutral terminal. If the fitting is earthed, connect the green/yellow earth wire to the earth terminal.

6. Secure the fixture

Mount the light securely to the ceiling or wall bracket using screws and wall plugs if necessary. Ensure all connections are tight and that no bare copper wires are exposed.

7. Test the system

Restore power at the breaker. Test the switches: both should be able to turn the light on and off independently, regardless of the position of the other switch.

Where to use a two-way switch system

Two-way switching is ideal for spaces where you want control from opposite ends or multiple entrances:

- Long hallways
- Staircases (switch at top and bottom)
- Large living rooms with two access points
- Bedrooms (switch near the door and another by the bed)

Tip: Always follow local electrical regulations. If you are not confident with wiring or unsure about your circuit layout, contact a qualified electrician.