I'm new to the boards and just moved into a little 1914 craftsman with my fiance. We noticed that there are electrical wires in the 4 corners of the box beams in the dining room. I'm assuming at one time lights hung from the beams. My question is, is it possible to connect new pendant lights to the old wiring without having to update the electrical and take apart the beams? The wires are wrapped with what looks like thick woven cloth and lots of electrical tape around the ends. They are "live" when the light switch is on, and they all seem to work. However, there is no distinction between red vs. black.