Using this light set is easy. First, install it on your Bafang BBS01, BBS02, or BBSHD e - bike. The installation process is quick, but make sure to follow the basic steps carefully. Once installed, control the lights with the external switch. You can turn on the front and rear driving lights for normal riding, use the turn signals when changing directions, and the brake lights will come on automatically when you brake. Remember, this light set isn't compatible with 6V instrument control switches, so don't try to use it that way. To keep it in good condition, regularly check the waterproof line for any damage. If it gets dirty, clean it gently with a soft cloth. This high - quality light set is durable, but proper maintenance will ensure it serves you well for a long time.