In my basement, I am removing an existing fixture and planning on installing pot-lights. Previously when I have switched out a fixture, I generally find white + black + ground, which is pretty easy to deal with.
In this case, when I was removing my existing fixture, I found the following:
One stand has White + Black, but the other has White + Black + Red. The two blacks are tied together and go nowhere. The two wites are tied together and go to the light, and the red goes to the light (where I generally would use a black).
My original plan, was to pull the wire back to the switch (along with the new wire that I would use for the potlights). But with two wires going to the fixture, I'm not sure where/what the other wire would be for. I can still pull one back to the fixture, but I would rather try to figure out what the other one may be for before I do anything like that.
Any ideas what the second line would be for? If I continue with my plan, of pulling the one wire back to the switch I should be able to replace it with new romex for the potlight, wire it up the same and have no problems?