Updating knob tube wiring
Knob & tube wiring does not provide a third wire for grounding and is therefore considered unsafe in kitchens, bathrooms, laundry rooms and outdoors.
In other areas, knob & tube wiring that is in good condition with sheathing intact, properly protected from damage, and that hasn’t been subjected to extended periods of overloading which can cause it to become brittle, should not pose an increased safety risk.
This might not be the same in all homes, but it was definitely the case with mine.
Next I removed the original light fixture, making sure to protect those eyes with safety glasses!
If a house does have knob & tube wiring wiring it should be inspected to ensure that it is properly installed and in good condition.
If there is power running through the socket, the detector will either display a red light or emit a chirping sound when touched to the wires.Both of the wires gave a 120 volt output, meaning both wires were hot.