Fan Wiring Diagram For Laptop. The fan has 4 wires yellow black white red but the power supply has just two wires. 120mm cpu 12v dc fan wiring diagram.
If you leave the two pieces separate then you can plug one of the 4 pin pieces into a 4 pin 12 volt connector and leave the other 4 pin piece unplugged. These diagrams are current at the time of publication check the wiring diagram supplied with the motor. Usually for more flexibility they have a male female 4 wire molex power connector.
Signal switched 12v 86.
Giving power to the fan it will rotate at full speed. There is no fan control. A resistor to either the 12v or pwm wire on a 4 pin cpu fan to retain the automatic. 3 pin fan connections.