High level - I’m trying to stick a Red on/off somewhere in this circuit, but I haven’t found the common neutral. I have found an always-hot red wire (weird!?) but that box only has travelers going out of it, no neutral. First step is to help me connect the dots here and understand what’s connected to what. It’s a strange one to me at least.
Ceiling light #1 seems very straight forward. I can see a single 2-wire romex coming in. There’s a black/white and it connects directly to a fixture. There’s a ground wire too.
Ceiling light #2 is a in-ceiling downlight (circa 1990s probably) that looks like it has a metal conduit coming into it. I cannot see a ground wire. I can see a black/white coming out of the conduit that connects directly to the bulb fixture. I guess it’s possible there’s a box in the ceiling that grounds the fixture on the outside? Maybe?
Here’s my best interpretation of the 3 switches based on what I can see.
Box #1 is the weirdest to me. There must be two romexes going out of the box, but it’s difficult to tell which wires are bundled together in the two romexes because the outer sheathing is cut wayyy up in the back of the box and I can’t really see it.
Box #2 - I think this is pretty straight forward.
Box #3 also seems odd to me as it’s the red wire that is always hot in this circuit. (using a tester between this red and ground it is always on in all switch configurations). Not only that but there’s a single 3-way romex so that red wire must run off to somewhere - but I couldn’t tell you where. The only other red wire in the circuit is in Box #1 and it is most definitely not always hot.