100 Lights Level 21 Walkthrough | The Basement 21 | 100 Lights Walkthrough Watch this video on YouTube 1. Tap WRENCH hanging on post 2. Tap WRENCH in Items to activate 3. Tap SAFE 4. Tap SWITCH to turn light on 100 Lights Level 21 Walkthrough The Basement 21 100 Lights Walkthrough 100 Lights Cheats 100 Lights Answers 100 Lights Level 22 Walkthrough 100 Lights Level 20 Walkthrough