In the switch room, turn switch 1 = ON, 2 = ON, 3 = leave O…

In the switch room, turn switch 1 = ON, 2 = ON, 3 = leave OFF. After a minute 1 = ON, 2 = OFF, 3 = OFF. Go to the bulbs, whichever bulb is ON is controlled by switch 1. Whichever feels warm to the touch is switch 2. Cold bulb = 3.