The clue is on the elevator door (brightest, normal, lightest).
- Tap the box and get 3 bulbs. Equip one and put it on the farthest right. Pull the chain to light it up. Equip another light and put it in the middle. Pull the chain again. Equip the last bulb and put it on the last fixture. Pull the chain for the last time.
Elevator opens. Welcome to level 63.