[HayZee518]

the old knob n tube wiring in the walls for the most part aren't fastened anyplace except in the attic or basement where they splice into the horizontal feeds. they also have loom a tough jute fiber where the wires enter a cast iron switchbox or three inch ceiling box which is now illegal for wiring. 3/4 pancake or ceiling boxes are also in the old ceilings and won't do for the new codes. a way around a firestop is to use a four foot flexi-bit with a screw auger on the end. you can extend the flexi bit by drill shaft extensions but controlling them is difficult. the way you locate a wall for drilling up from the basement is: you take a long finishing nail and about an inch away from the baseboard, drive the nail down almost all the way between the boards of a floor. now go in the basement and locate the nail. Now you must figure out a suitable distance from the nail point to the baseboard and then an angle or another distance to the approx wall center. then you use an auger and drill up. since you cannot drill straight up on an exterior wall, an angle must be figured to drill upward. then a fish tape is pushed up the hole.