3 Wire Computer Fan Wiring Diagram. In a 3 wire fan first two wires are the power supply wires of the fan. Fan power and ground.
The third wire varies depending on the manufacturer but usually it is blue or yellow. Proper fan connector placement is shown in the figures below. Cable coloring varies from fan to fan.
3 pin and 4 pin fan wire diagrams.
Fan power and ground. By chris on october 5 2021 october 5 2021 leave a comment on 3 wire pc fan motor wiring diagram. Wiring 3 wire pc fan motor wiring diagram. What is the difference between three and four pin cpu fans.