Up next in Home Decor & Lighting (30 videos)
Check out all the ways you can make your home more beautiful with the home decorating advice in these videos.
You Will Need
- A screwdriver
- A circuit tester
- A wire cutter
- A wire stripper
- 3 twist-on wire connectors
Cut the power
Cut the power to the light switch by flipping the circuit breaker or removing the fuse at the main panel.
Remove the plate
Unscrew and remove the light switch cover plate.
Remove the switch
Unscrew the screws that anchor the switch in the electrical box, and remove the switch. It will now be attached by only three wires.
Remove two wires
Two of the wires going into the switch will be similar (either both black or one white and one black), while the third will be either a green or bare copper ground wire. Loosen the screws that hold the two similar wires to the switch, then remove those wires.
Remove the ground wire
Now remove the ground wire.
Cut the ends
Cut the ends of the three wires coming from the wall. You’ll use the wire leads that come already attached to your dimmer switch.
Strip the wires
Strip an inch of insulation off the wires coming from the wall. If your ground wire is bare, you won’t need to strip it.
Attach the ground wires
Use a twist-on wire connector to attach the green ground wire from the dimmer switch to the ground wire coming from the wall. Hold the wires next to each other, and screw on the connector in a clockwise direction.
Attach one wire
Using another connector, attach one of the other two wires from the wall to either of the two black wires on the dimmer switch.
Attach the black wire
Using another connector, attach the remaining wire from the wall to the remaining black wire on the switch.
Screw in the dimmer
Screw the dimmer switch into the electrical box.
Reattach the cover
Reattach the light switch cover plate and tighten its screws.
Attach the knob
Attach the knob to your dimmer.
Restore power to your switch. Now let that light shine!