Wiring under the window Yesterday, I decided I would try to tackle some of the electrical work, so I ripped out the old knob & tube wiring feeding the stairway lighting. After digging through mountains of blown fiberglass insulation, I'm surprised I was able to get to sleep with all the scratching. Today, I invited two friends over to finish the job - what we accomplished is truly awe-inspiring. In 5 hours, the three of us ran wiring through the walls and ceiling for a couple of outlets, and completed two double-switched wiring circuits, as well as installing fire blocking mid-span in all the stud bays.