Ok, so this is what I have found so far. Hopefully you can read my poor attempt at a diagram.
Very top is the breaker box. The box directly below is the one from the pics I posted. So yes, I have a borrowed neutral for the light connected to that box. It gets power from 1, and neutral from 2.
Then there is 3. So when I cut the breaker to 3 ALL the lights go out, including the one up top coming out of the breaker box on 1. I suspect if I took the cover off the breaker box I would find that 1 and 3 are connected to the same breaker.
3 by the way goes on to power like half the house. This diagram is just the basement.
Very top is the breaker box. The box directly below is the one from the pics I posted. So yes, I have a borrowed neutral for the light connected to that box. It gets power from 1, and neutral from 2.
Then there is 3. So when I cut the breaker to 3 ALL the lights go out, including the one up top coming out of the breaker box on 1. I suspect if I took the cover off the breaker box I would find that 1 and 3 are connected to the same breaker.
3 by the way goes on to power like half the house. This diagram is just the basement.