[Zeke]

Sorry I didn't respond the way you wanted, Alan. I did miss the part about having voltage in both boxes but you still have to know which is fed from the circuit if you want any chance of repairing what you have.

The reason I said what I said is 9 times out of 10 the wiring is not done correctly and that's why the lights don't work. If you know you have a break (you don't by the terminology you used), then obviously you need to rewire. Since all wires to any fixture have to be in the same cable or conduit, then WireMold is the way to do it.

In case you are able to fish any part of it, WM does make fittings for a cable (what many refer to as Romex) to exit the WM and run behind the drywall as far is it will go. Of course any corners and blocking will foul that plan.

So to please you and give you the straight answer, yes I have used approved surface mount conduit in plastic and metal. You can run cable in WM but it was designed for individual wires. If the WM makes a hard angle at the ceiling you cannot use cable as the code won't allow a bend where the radius is less than 7 times the overall diameter of the cable. You can see by this that individual wires can make that bend within the code.