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Making a molex to 3 pin fan cable.

  • Power Supplies
  • Fan
  • Cable
  • Components
Last response: in Components
February 1, 2008 5:06:20 PM

I need a cable that will allow my power supply to power a couple of my CoolerMaster 120mm case fans. Since I don't feel like spending $5 a piece or waiting for shipping, I thought I might try to make them my self from the cables from an old power supply I have. I already have a male to 2 female molex adapter, so I need to make 2 male molex to male 3 pin fan cables. On the cables I make, I think I would only need to wire the 5 volt red and black wires from the molex to the fan connector, but I'm not sure. Do I need the 12v yellow wire for anything?

More about : making molex pin fan cable

February 1, 2008 5:43:19 PM

February 1, 2008 5:53:32 PM

12v yellow to 12v black(or red). Bigger fans need more voltage.
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February 3, 2008 7:59:57 AM

Why not just plug it into a molex connector? Most of those fans have a coupler so you can still plug into another device.....
February 3, 2008 11:25:51 AM

They only have a small 3 pin female connector.
February 4, 2008 6:20:13 PM

5 volt may be too low to start the 12 volt fan.
February 4, 2008 7:44:16 PM

Yep, that's the problem. I just ordered adapters from Newegg so I don't have to fool with it.