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Thread: CPU Cooling Fan Wiring

  1. #1
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    CPU Cooling Fan Wiring

    Can anyone tell me how to wire a cpu cooling fan? Three wires.....

    yellow
    red
    black


    Thanks
    -Allen


  2. #2
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    red is to the 12v wire black is to the ground.

    yellow is the rpm wire only used if you plug it into the board.
    most the time
    -----------------------------------------
    yellow on the power supply is 12volt ,black is ground. red is 5



    so red (fan)to yellow-black to black.

    I would use the wires used for harddrives/floppys. Stay away from the main board wires. you dont want to add noise.


  3. #3
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    Wow!! Got to love this site, superfast response to your questions. Thanks sendkeys, I do appreciate it!!


    -Allen


  4. #4
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    np happy to help when i can.


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    If you intend using the Fan in your Power Supply, give a thought to connecting it across your smoothing Capacitors, (dropping the Voltage with a Regulator if needed), as this assists in bleeding the Voltage from them on shutdown. A nice safe 'Zero Volts' remain, the next time that you open the PSU Case.


  • #6
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    I was planning to but thanks for the information...


    -Allen


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