Posts by CSTools

    Flip switch number 1 and wait a few minutes.

    Flip switch number 1 back to its original position, and then immediately flip switch number 2.

    Open the door.

    If the light is on, then switch number 2 controls it.

    If the light is off, then go and feel the bulb with your hand.

    If the bulb is hot, the switch number 1 controls it, and if the bulb is cold, then switch number 3, the one you did not touch, controls it.


    PT02