Installing a motion sensor to an existing light fixture

You can install a motion sensor into an existing lighting circuit, as long as you have access to the wiring. Adding a motion sensor is just like adding a switch – it will break the circuit until the motion is detected.

You can connect it to any type of decorative fixture—even existing ones—and mount it discreetly off to the side. This article will show you how to install and connect a remote sensor to new or existing lights.

A motion sensor light does not need a switch, but it's still a good idea to add one. A switch ensures that the light won't turn on unless you actually want it to. If you want the light to stop responding to movement, you will have that option if you've installed a switch.

Sensor lights require a licensed electrical contractor to wire and install them.