Add Timer To Existing Light Switch

The source for this circuit is at an already existing light fixture and a 3 wire switch loop run from there to the switch box.

Add timer to existing light switch.

I am only installing the timer on one switch. Remove the top and bottom screws that secure the switch to the wall box. Pull the switch out of the box carefully by. If you don t have someone.

Installing a timer switch in outdoor lighting is the same as installing an ordinary wall switch. Arrange the wires so they fit in the electrical box. Of course you can use a two wire timer even if you have four wires available. I would like to change the fan switch into a timer and my timer has only two soft black wires.

A timer switch is an inexpensive device that automatically turns your outdoor lights on or off according to your setting. When you re doing daisy chain wiring on a light fixture each pigtail usually contains three wires but there could be more if you re adding more than one extra light. These are super simple to install. Below are the materials that you need along with the instructions on how to install a timer switch in outdoor lighting.

The light will turn on or off without interfering with your pre programmed schedule. There is an existing light and existing switch. The two switches share a double gang box. If the box is metal be sure any exposed switch terminals are not touching the box.

Existing light switch is connected using only black wires. If you re just adding one the wires in the pigtail include the live circuit wire the wire going to the new fixture and the wire from the existing fixture. Unscrew the wire nut holding the two black wires together on your existing light. Strip the last one inch of your new black wire and place all three black wires together.

There is an existing fan and existing switch. Unscrew the wire nut holding the two white wires together. Removing the existing switch. The last thing left to do is program your light switch timer to turn on and off whenever you want.

Wiring diagram for a new switch and light. In this diagram a new switch and light are added to an already existing light switch. Timer has four colored wires to attach to existing wiring. Turn off the circuit breaker that is delivering power to the switch you are planning on replacing with the timer.

With these switches if you ever want to turn the lights on and off outside of the scheduled times just press the entire door cover. Twist the wire nut onto the three wires to secure them. Push the timer switch into the box so the flanges on the switch are flush with the wall and aligned with the screw holes in the electrical box. White wires are just all bundled together with a wire nut existing switch is a double plate with a second double plate switch above it to other lights.

Insert timer switch into box.