There is a transfer interface, which can be applied to different types of throttle interface 24/36V/48V/60V 250-350W 10A-20A brushless gold controller function: 1.low level brake 2.cruise 3.brake light power 4.PAS(pedal assist) 5.reverse gear 6.high level brake 7.speed controller handle?throttle) 8.phase meter 9.three speed gear 10.hall meter 11.hall 12.intelligent recognition?self-learning lines) 13.head/tail light 14.electric door lock 15.phase line 16.battery how to connect ? 1.connect the motor line (color to color) 2. connect the battery line(red wire :battery + , black:battery-) 3. connect the controller throttle line?color to color) , connect electric lock ?if your throttle not have electric lock, controller electric lock can be shorted) 4. connect the hall line(if motor without hall line, don't need connect) 5.docking the two intelligent recognition line, the wheel will forward or reverse. (1.if wheel forward ,Separate the intelligent recognition line. 2.if wheel reverse, Separate the intelligent recognition line. Docking the intelligent recognition line again, if wheel forward ,Separate the intelligent recognition line.) 6.other functions can be connected as needed.