Run a 14-2 NM-B cable from the second switch to the light fixture. Safety note: This project assumes a 15-amp breaker for your lighting circuits. If you see that your breaker is 20 amps, you will ...

That way, you’ll be sure to reconnect the wires correctly to the new switch. If you can’t kill the electricity, the switch box might be connected to a cable from a different circuit.

At $50, the Wemo WiFi Smart Light Switch 3-Way costs $10 more than the $40 standard Wemo 2-Way switch. That’s significantly higher than the typical, generic 3-way smart switch, but in line with ...