Turn off the power to the area in which you will be working.
Step2
Unscrew the switch cover plate and remove it.
Step3
Pull the old switch out carefully to expose the wires.
Step4
Unscrew the wire nuts to remove the wires.
Step5
Take the old switch to the store to get a replacement that will fit perfectly. It should have the same number and type of wires. You will also need a new cover to fit the dimmer.
Step6
Back home, reconnect the wires from the wall to the dimmer switch.
Step7
Once the wires are firmly attached, mount the switch back in the wall and replace the new cover.
Step8
Screw the cover in place and turn the power back on.