Controller wiring instructions:To the motor to work at least first connected to the first four connectors, the first controller on the two thicker blue and white lines connected to the motor, in which the blue line of the red motor, white line to the motor black line. Followed by the controller of the two red and black lines connected to the battery, the then the battery cathode, black line connected to the negative. The third re-connected to the speed control to the joints, (speed control turn to have three lines, be the on the , black line on the black line phase). Once again connected to the electric lock, open the door locks, turning the motor can run. Voltage: 48V Rated : 1000W Compatible for: 700-1000W motor Colour:silver Material:Metal Package Contents: 1 x Brush motor controller Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.