I'm attempting to swap out a ceiling light in a 100 year old house. I have found what appears to be 3 hot (black) wires bound to one of the previously installed light's wires, and 1 hot (black) wire bound to another wire in the lamp.
There is only one switch that controls this light. The previous installation works properly, in terms of turning the light on and off. After pulling the switch out, it would appear there is a hot (black) and a neutral (white) attached to this switch.
With the switch in the Off position, the light turns off and my no contact voltage meter reads both the group of 3 black wires, and the single black wire as hot. With the switch in the On position, the light turns on, the group of 3 reads as having power, while the lone black wire has no power.
How should I attach my new light?