With Wiring Diagrams you can check out a dozen basic reference images for when you need to look at wiring configurations. There’s not much to the application – it doesn’t display proper grounding or ...

Step 1: Install a box for the new electrical switch and run a red, a white, a green and a black 12- or 14-gauge wire from the existing outlet to the new switch box. Strip the ends of the new wires.

So the existing switch has 2 terminals on one side, and 1 on the other. The 2 terminals have a black sheathed (B) and red sheathed (R) wire attached. The single terminal has a grey sheathed wire.

On a smart switch, the red wire often connects to the switch leg to control a light or other load. Within an electrical box, a red wire may be a traveler, a switch leg or the second hot of a 240 ...