Trying to install a digital timer for a wall switch in the garage which controls an outdoor light. Timer has 4 wires - black, white, red, green, one of each. Directions for the timer assume the box has those 4 wires - what do I do with the red and the green extra wires? Older houses may not have a ground, so no worries for your green wire in that regard if you don't have one. Timers are regarded as specialty switches, and with knowing how they are wired , will get you through this project. A timer is much like how a switch works, it is an interrupter that controls whatever electricity is going past it, in this case your outdoor light in the garage.
Extra wires in timer I want to install
defiant daylight adjusting timer in a 3-way | The Home Depot Community
In this Instructable, we'll be learning how to use a timer switch and a 12V relay to control the extension of an Actuator. You'll be able to set the timer with up to 17 time schedules, and have the actuator extend and retract when the time is right. No coding is required, all control comes from the timer. Any 12V power supply can be used, as long as it can deliver the current that the actuator requires 5A minimum suggested. Wiring the relay creates a half bridge.
How to Wire a Time Switch
You can replace any indoor light switch with an indoor timer switch to control any light in your home. Depending on the type of timer switch you choose, you can program it to automatically turn your lights on and off at least once a day. You can use the existing wires inside your electrical box to connect your timer to your lights. Turn off the lighting circuit breaker in the main service panel. Hold a noncontact voltage detector against the current light switch to ensure you disconnected the power.
Installing a timer switch in outdoor lighting is the same as installing an ordinary wall switch. A timer switch is an inexpensive device that automatically turns your outdoor lights ON or OFF according to your setting. Below are the materials that you need along with the instructions on how to install a timer switch in outdoor lighting. Inside the main electrical panel, locate the circuit breaker that feeds that power line or circuit and switch it OFF. If the circuit breaker is not identified, turn on all of your outdoor lights and get a friend to check and let you know when the lights go off as you switch OFF every breaker alternatively.