When the chandelier starts flickering, don’t blame it on a ghost. Time to learn how to wire a light switch. You know that you need to change a switch when the lights go in and out, or if they make a ...

A light switch is the simplest of electrical devices. Flip the switch, electricity flows. Flip it again, electricity stops. Lights on, lights off. That’s great for a small room with one entrance.

There are as many varieties of smart light switches (and dimmers) as there are light bulbs, and while the prospect of upgrading your old dumb switch might seem daunting, they’re usually pretty simple ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Liam McCabe I made no fewer than five mistakes trying to install a smart ...