Game world = COM02 Firebox.
I am assuming you can only open the door once.
Flick switch 1 on and wait for one minute.
Flick switch 1 off again.
Flick switch 2 on and immediately open the door.
> If the light is on,
= it is switch 2.
> If the light is off, put your hand on the bulb,
> if it is warm then
= it is switch 1
> if it is cool then
= it is switch 3 OR you are on a british train and nothing works.