By attaching this simple connector, you can use the SpeedBox 1.0, 1.1, 1.2 and 1.3 for Bafang and your lights at the same time.

SpeedBox for BAFANG allows you to use only one of your lights. When you use this cable then you're able to use both lights.

For SpeedBox 1.0, 1.1, 1.2 a 1.3 for Bafang only.

The cable is not needed for SpeedBox 3.0 and 3.1.