Note: Due to the motor design having only 2 speed modes, even if the controller has a 3-speed interface, the motor has already reached its maximum speed in the second gear, so the third gear speed and the second speed are the same. The reverse gear has only one speed mode, which is the low-speed mode. before use motor,please make self-leaning test,after test motor can work well.some buyer received package.not make self-leaning test,motor can't work well.so think motor not work. About Motor: 1.Model:MOTOR MY1020 2.Motor Type: High-Speed BLDC brushless Motor 4.Out put /W: 1000W. 5.Rated Speed:3100RPM/MIN 6.Rated Current:27.7A 7.Weight:3.5kg 8.Shaft diameter:12mm 9.Rated Torque:3.5 N.m 10.Applicable: Electric Scooter,Ebike,Folding Bike,Small E-Moto,machine,MIni Electric Car ,DIY 11.Installation: Center,MID DRIVE SYETEM. 12.Sprocket/Chain: T8F Sprockt /Chain. 13.Speed:30-50km/h 36V-48V 1000W controller can work with hall connect sensor or not connect hall sensor Rated Voltage: 36V/48V Low Voltage : 31V/42V±0.5V Rated Power: 1000W Limit Current:30A 1.self-learning 2.cruise line 3.reverse line 4.high brake 5.low brake 6.3-speed (low/middle/high) 7.throttle 8.electric lock 9.hall line 10.LCD instrument line 11.Anti-theft power supply 12.Anti-theft signal 13.battery (red battery+, black battery-) 14.motor 15.pointer meter line how to connect? 1.connect the motor line (color to color connection? 2. connect the battery line(red:battery + , black:battery-) 3. connect the controller throttle line to throttle, controller electric lock connect to throttle electric lock 4.off power,let two self-learning lines connect together, open power,the motor will forward or reverse. (1.if motor forward ,Separate the self-learning line. 2.if motor reverse, Separate the self-learning line. let two self-learning line connect together again?if motor forward ,Separate the self-learning line.) Self-learning is to adapt to the supply voltage,adjust the running direction of the motor,simultaneously pairing phase note:when use throttle control speed,two self-leaning line must separate.when two self-leaning line connect together,the throttle can't work. 5.other functions can be connected as needed.