generally, the connection of the motor wires of the range hood is as follows: 1. first, connect the three wires of the motor to the three interfaces on the control box respectively. Usually, the red line represents the positive electrode (also called coil), the blue line represents the negative electrode (also called neutral), and the black line represents the ground wire. 2. Then, connect the power cord of the control box to the power socket. 3. Finally, connect the control line of the control box to the range hood, usually to the power switch of the range hood. Note: In the wiring process, be sure to pay attention to the voltage to ensure that the voltage of the motor is the same as that of the power supply. Also pay attention to the order of wiring, and do not connect it backwards.