"SteveR" wrote in message
...
Thanks to all for the suggestions. Jim, you're right, it is type TW. And
I've noticed that the insulation seems a little brittle even inside the
outlet boxes. As everybody suggested, I'm going to try pulling the wires
again. If I learn anything I'll post.

Steve
You will have a much better chance of success if you pull all of the wires
together as a unit, with a fish tape or new wire(s) attached to the tail
end. Make the splice as strong, small and flexible as you can, keep
everything as straight as possible, and lubricate with wire pulling
lubricant to give yourself all possible advantage. Push one end while
pulling the other, work carefully, and pull back and forth as seems
necessary. Cleaning out the conduit with compressed air or a vacuum cleaner
can be a help. Good luck.

Don Young