If you use a light you may need a helper. Its not safe to work on a light switch with the power on.

How To Turn Off A Light Switch Youtube
How to turn off a light switch. You might notice this type of issue if the light bulb flickers while turned on. To replace a light switch start by disconnecting the power to the switch by shutting off the breaker for the room. Most manufacturers make it a fairly easy process to disable this main feature of the lights. You do this by accessing the correct circuit breaker and switching it to the. Here is what you would have to do if possible change out the 2 wire to 3 wire cable from switch to light. Autoplay when autoplay is enabled a suggested video will automatically play next.
Removing the light switch 1. As you can see connecting a receptacle to the light would see the receptacle only hot when the light switch is on. Test for live voltage. Plug a light or better yet a television or radio into the outlet turn the power on then flip breakers until the light or sound stops. Turn off the power to the light switch. Most light switches are covered by a decorative panel.
Set it to any position aside from the test position and flip off the switch that the light is connected to. A quick video tutorial on how to turn off your lights if you have a rocker style light switch. Turn the switch on then touch the tester leads to both of the brass terminals on the switch and verify that the tester led goes on. Once the power is cut remove the switch cover and mounting screws with a screwdriver and pull the old switch from the wall. In this case you must change the cable from the switch to the light outlet from a 2 wire to a 3 wire cable. If the led goes off the switch is good and the wiring is faulty but if the led stays on the switch is bad and needs to be replaced.
A wire getting loose in a terminal screw or in a wire connector at the switch or light fixture could cause the flicker. A third problem that might be blamed on the light switch can actually caused by the light fixture itself. This can be caused by different events. A switch on the fixture should read on time usually found directly under the motion sensor. Turn off the power at the breaker box. Turn the switch off then repeat the test.
You will need to remove this in. Remove the switch panel cover.