I've just read Hemingway's Old Man and The Sea, and I liked it.what are other classic novels, that you think any person should read, that are short, easy to read and, of course awesomethanks!
You need to replace the wiringBe care-full, if the old wiring has insulation on it, it most likely is asbestos.
Check to see if these wires are still live, if the electric has been updated that does not mean the old wiring had been removedIf you are unsure call electrician, old knob and tube wiring can be dangerous.
That must be some OLD wiringAll you can do is be very carefulThis would be a good time to consider putting in new wiring.
This is one time I'd say life was much more important than the savings of heat and coolingYour wiring is too old, probably brittle for any kind of activity up thereJust get some new wire and install it before messing with the insulationThen if you have enough left over install what insulation you can.