Anyone who can change a light bulb is capable of turning any light into a motion sensor light. This task can be accomplished simply by inserting a motion light sensor into the light socket on existing fixtures. Motion light sensors can be used indoors or outdoors on any type of light fixture. Light fixtures with multiple light bulbs usually require a motion light sensor on each light socket in order to give each light independent motion-sensing capabilities.
Drape a lint free cloth over the light bulbs in the existing fixture and grip the top of the bulb. The cloth helps protect the bulb from oils on your hand, which could damage the light bulb and cause it to break. Gently rotate the bulb counterclockwise to remove the bulb from the fixture.
Insert the end of the motion light sensor into the light socket. The end of the motion light sensor looks just like the bottom of a light bulb, and it installs the same way as a light bulb. Rotate the motion light sensor clockwise until it doesn't rotate anymore.
Screw the light bulb into the top of the motion light sensor. Rotate the bulb clockwise until it doesn't rotate anymore.
Flip the setting switch on the motion light fixture to the "On" position, and leave it in that position as long as you want the light to turn on when the motion sensor detects movement. The light will turn off automatically when the motion sensor no longer detects movement.