Replacing Switch from a house that was wired in the 40's

I was going to replace two lights switches in my house with some new ones that have a black switch instead of the original white ones (per the wife's request.) House is old and still have the wiring from the 40's which I think is cloth wiring. The problem is when I went to turn off the breaker. I flipped every breaker available but none of them turned off the light for the switch I need to replace. What does this mean? I'm a weekend warrior and have swapper overhead lights in the house before and even installed two ceiling fans but was able to cut power at the breakers.

https://preview.redd.it/3l1r96x5uhhf1.jpg?width=4032&format=pjpg&auto=webp&s=34b1949fe21d4367e278efdf25e5e088bb584e5f

https://preview.redd.it/mw7jc9x5uhhf1.jpg?width=4032&format=pjpg&auto=webp&s=41380e591445c62e311f2fdc803b0f039d9b15b5

The new switch.

Back of the new switch

Posted Aug 7, 2025, 12:44 AM UTC

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