The main connector can become loose and if you dont have a proper wrench you could damage the wiring. This allows you to hand tighten the nut while holding the connector with crescent wrench to fix the issue
How to use:
- Tighten the nut manually and place the printed wrench
- Using a cresent wrench or similar, hold the flat sides of the thread
- Tighten the nut with the printed wrench, since is held on rubber, you can achieve a great pressure to prevent it to become loose again