wiring diagram of electronic choke in tube light

According to www.wilberelectrical.com knob and tube wiring is no longer legal. You will need to replace it. Chances are, as knob and tube wiring is very, very old, something has broken or it has been disconnected as knob and tube is not very safe. I would recomment replacing it with modern wiring devices rather than trying to repair it.

its getting to ship , wiring of the line of tube

Check for broken wires in the black rubber tube where the wiring goes into the door.

Check for broken wires in the black rubber tube where the wiring goes into the door.

If you are considering changing out the knob and tube wiring in your home, it is going to be a big job. It entails gutting the inside walls to get to the bare wall studs. From that point on it is the same as wiring a new home using all of the proper wire sizing for the appropriate appliances and devices that are to be added for the upgrade.