How to Install a Dimmer Switch

Learn how to replace a dimmer switch. As you replace incandescent light bulbs with energy-saving LEDs or CFLs, your old dimmer switch might not be compatible. You’ll need a universal dimmer switch and LED or CFL bulbs labeled as dimmable. Learn basic instructions for installing a single-pole universal dimmer switch including how to use a wire stripper, using a voltage tester and connecting wire nuts.