I'm replacing a light fixture in an old apartment where the ceiling wiring has two brown/red wires and one black wire. When I removed the old fixture it was wired with black to black, the white wire was extended with another white wire with a wire nut and then connected to the two brown/red wires. The old fixture did not have a grounding wire. One of the brown/red wires seemed to be coming down directly from a small hole in the ceiling and the other brown/red wire was coming out from the side of the ceiling along with the black wire.
So, I took my new fixture and connected the black to black, the white to the brown/red that was next to the black and seemed to coming out of the side of the ceiling/junction box (terminology?) and then I connected my green grounding wire to the other brown/red wire that was coming down directly out of the small hole in the ceiling.
I would like to know did I wire this new fixture correctly? It seems to be working just fine and I even tested it with a voltage meter after I turned the power back on in case I didn't ground it correctly.