Before you attempt to fix a faulty light switch, make sure you understand the basics of light switch wiring. ... and the diagrams below explain how each type works. Power-Through Switches.

Rocker switch wiring might seem complicated, but it's easy to understand once you break it down. These switches are things we ...

If you do have this wire, Donnelly says to attach it to the green screw, which will be on your light switch. Step 5: Replace the switch plate Use a screwdriver to place the switch plate back on ...