![Trying to install digital timer to outside lights. Have two switches to control lights. old switch has black (common), Trying to install digital timer to outside lights. Have two switches to control lights. old switch has black (common),](https://ww2.justanswer.com/uploads/MikeG2010/2012-08-17_193620_sun_smart_timer_ii.jpg)
Trying to install digital timer to outside lights. Have two switches to control lights. old switch has black (common),
![Light between 3 way switches and installation of electronic timer switch - Home Improvement Stack Exchange Light between 3 way switches and installation of electronic timer switch - Home Improvement Stack Exchange](https://i.stack.imgur.com/W5nQw.jpg)
Light between 3 way switches and installation of electronic timer switch - Home Improvement Stack Exchange
![How to wire a single pole switch for a light as well as a timer for a bathroom fan where the timer will only work when the light is off (DIY, wiring, How to wire a single pole switch for a light as well as a timer for a bathroom fan where the timer will only work when the light is off (DIY, wiring,](http://waterheatertimer.org/images/ST01C-EJ500-w-3-way-450.jpg)
How to wire a single pole switch for a light as well as a timer for a bathroom fan where the timer will only work when the light is off (DIY, wiring,
![Amazon.com: BN-LINK 7 Day Programmable Astronomical In-Wall Timer Switch for Lights, fans and Motors, Single Pole Only, No Neutral Wire Required, White : Tools & Home Improvement Amazon.com: BN-LINK 7 Day Programmable Astronomical In-Wall Timer Switch for Lights, fans and Motors, Single Pole Only, No Neutral Wire Required, White : Tools & Home Improvement](https://m.media-amazon.com/images/I/41yw1olkZeL._AC_UF894,1000_QL80_.jpg)
Amazon.com: BN-LINK 7 Day Programmable Astronomical In-Wall Timer Switch for Lights, fans and Motors, Single Pole Only, No Neutral Wire Required, White : Tools & Home Improvement
![electrical - How do I replace a single pole light switch with a programmable timer switch? - Home Improvement Stack Exchange electrical - How do I replace a single pole light switch with a programmable timer switch? - Home Improvement Stack Exchange](https://i.stack.imgur.com/FSVh1.jpg)
electrical - How do I replace a single pole light switch with a programmable timer switch? - Home Improvement Stack Exchange
![Defiant 15 Amp In-Wall 3-Way Daylight Adjusting Digital Timer Switch with Screw Terminals, White 32648 - The Home Depot Defiant 15 Amp In-Wall 3-Way Daylight Adjusting Digital Timer Switch with Screw Terminals, White 32648 - The Home Depot](https://images.thdstatic.com/productImages/8ddc822d-3e95-4f1a-b716-4976797d9ca4/svn/white-defiant-timers-32648-1f_600.jpg)