A light switch is the simplest of electrical devices. Flip the switch, electricity flows. Flip it again, electricity stops.

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 ...

In this video, we demonstrate how to install a light switch with various wiring configurations. Learn how to wire a light switch and outlet, replace a light switch, and manage different wire setups, ...

Dear Tim: I have a chance to take a $250 course on electrical wiring. The course covers how to change outlets, switches, light fixtures, rewiring circuits, etc. I’m terrified of electricity and use a ...

Churning with voltage and resembling an explosion at the wire factory, the breaker panel exudes mystique. But it's just a big switch, filled with other smaller ­switches, which lead to the switches ...