Looking to replace a mechanical 2-wire timer with a digital 3-wire timer

As mentioned int he title, I'm looking to replace an old mechanical 2-wire timer with a new digital 3-wire timer. I took a bit of a look around to see some people saying this wasn't possible (without more electrical work being done). That said, the wiring configuration in the box now makes me thing that this might be possible. You can see a photo HERE. There seems to be black and white wires and the ground looks present in the back. This box has another regular light switch as well. I assume I need to uncouple the the white wires, use the corresponding one to hook up the new timer and just cap the unused remaining white one? Then black to black and ground to ground. Please let me know if this is correct, I don't want to fry this new timer (or worse). Thanks. submitted by /u/4th_Chamber [link] [comments]

Apr 5, 2025 - 19:55

As mentioned int he title, I'm looking to replace an old mechanical 2-wire timer with a new digital 3-wire timer. I took a bit of a look around to see some people saying this wasn't possible (without more electrical work being done). That said, the wiring configuration in the box now makes me thing that this might be possible. You can see a photo HERE.

There seems to be black and white wires and the ground looks present in the back. This box has another regular light switch as well. I assume I need to uncouple the the white wires, use the corresponding one to hook up the new timer and just cap the unused remaining white one? Then black to black and ground to ground.

Please let me know if this is correct, I don't want to fry this new timer (or worse). Thanks.

submitted by /u/4th_Chamber
[link] [comments]