How do you properly wire a four-way switch in a multi-way lighting circuit?

To properly wire a four-way switch in a multi-way lighting circuit, you need to connect the traveler wires from each three-way switch to the four-way switch. The common terminal on the four-way switch should be connected to the light fixture. Make sure to follow the wiring diagram for the specific type of four-way switch you are using to ensure proper installation.