I have a very odd light problem. We took down the ceiling to move a light. We have two switches in the dining room that control two lights. After moving the one light, I tested the light I moved and it is working fine. I simply physically moved the box, I didn't do any new wiring. I'm not sure I tested the other light but it was working before the ceiling came down. Now, the light I moved is working but the other light doesn't come on. The odd thing is that the working light is getting power from the non-working light.
Another odd thing is that the non working light has odd wiring in that there are two white wires coming out of each cable but no ground wire. One of these white wires seems thicker and is partially stripped at the base. The working light has regular two-wire with ground.
Why would this light not be working?
Best Answer
The existing wiring is as in this diagram:
So the solution was to tie the white sheathed wires with a copper wire to make them ground again. I tied in another black to the existing blacks (one was cut off previously for some reason) and hooked the black and "white" (black wire tied in with the other whites) to the light. All works fine now.