48V 36V 17A Controller For 250W 350W Brushless Motor Waterproof Electric Bicycle
First of all, make sure that the outlet of your motor is waterproof nine cores,and motor is brushless hub motor. motor (9pin waterproof plug ) power (red-black plug). 1T4 cable plug(8pin waterproof plug-Throttle-Display-Ebrake 2).