I'm in the middle of a home renovation project (not doing it myself) and I purchased some nice brass light switches for my office. There are two places in the room where we have switches and they are on three way with each one. One bank of switches are toggles and the other bank are dimmer knobs. The problem is that the dimmer knobs are not set up to be three way and I didn't realize this until I the electrician tried to install them. Unfortunately the maker of the switch doesn't have a three way version. I'd really like to use these switches so I'm trying to figure out a way to do that. Is it possible to modify a normal dimmer switch to work as a three way switch? Obviously I would hire someone to do this and not attempt it myself, I just want to know if that's a possibility.

  • 2
    Why not just get three way dimmers? You can't change a simple switch to three way.
    – crip659
    Oct 16, 2023 at 16:44
  • Sorry, I forgot to mention that the switch maker doesn't do a three way dimmer.
    – d512
    Oct 16, 2023 at 16:47
  • 3
    Find one that does.
    – crip659
    Oct 16, 2023 at 16:49
  • Possible? Yes, but you'd have to open the switches, replace the internals, add another wiring point to the outside and COMPLETELY void the UL listing. If your electrician is even the slightest bit competent, he would absolutely refuse to install this home brewed abomination (or risk loosing his license). When the house burns down, your insurance company would deny your claim. Recommended? No.
    – FreeMan
    Oct 16, 2023 at 17:18
  • Who the heck made your dimmers anyway? Oct 17, 2023 at 0:23

2 Answers 2


Is it possible to modify a normal dimmer switch to work as a three way switch?

It is not possible. The difference between 2-way, 3-way, and 4-way switches is inherent to the internal design of the switch.


If you have neutral at both switch boxes, another solution is smart dimmers with one just set up to act as a remote control for the other.

  • Thank you for offering an actually constructive solution!
    – d512
    Oct 18, 2023 at 2:08

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