No need for complex software. Paper+pens+camera is good enough. I would recommend MS Paint, but Lemmy users will quickly point out the existence of GIMP.
Edit: it has been my experience that drawing out the circuit has helped me debug home wiring issues.
Take a contactless voltage detector (or multimeter) to the hot and neutral of the fixture. When the breaker is on, is it 120v? What about when the breaker is off? If its something in between then you might be dealing with mixed hot and neutrals from different branches (sketchy)
I’m struggling to visualize this. Can you make a diagram of what you have verified?
kew (formerly cue)
Yet it doesn’t appear as part of KDE plasma…
Heat pump water heater are really cool