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PSU cable colours

post #1 of 5
Thread Starter 
I am about to replace all of the plugs on my power supply and sleeve all of the cables as well. What i need to know is whether all of the same coloured cables are the same voltage. Common sense tells me yes, i just need someone who knows what they're talking about to say the same, so whether or not the two black wires of every molex are the same voltage. Ta.
post #2 of 5
Quote:
Originally Posted by iateallthepies
What i need to know is whether all of the same coloured cables are the same voltage. Common sense tells me yes, i just need someone who knows what they're talking about to say the same, so whether or not the two black wires of every molex are the same voltage. Ta.
On a 4 pin molex you will see numbers 1 to 4. The yellow wire must always go into 1. The red wire must always go into 4. Those are the hot lines or the power providers. The two black wires go into 2 and 3. It doesn't matter which one because they are both ground wires.

On the 4 pin floppy molex (smaller 4 pin plug) there are no numbers. You will need to keep track which hole the yellow and red wire needs to be by making a small mark on the plug.

On the 20 pin ATX plug (big one that plugs into the mobo), you will need to number the wires from 1 to 20 making sure that 1 and 20 are on the same end.

On the 4 pin wire which plugs into certain mobos you will need to number the wires too. Same with the Aux. wire.

You will need molex pin extractors and 20pin extractor to remove the plastic house from the wires. There are other ways, such as paperclips, you can use but you risk damaging the pins than anything.

Well I hope this helps.
post #3 of 5
Yellow = 12v
Red = 5v
Orange = 3.3v
Black = Ground

And I think:
WHITE = -5v
BLUE = -12v

Green is the switch, that needs to be "bridged" to a ground for your mobo PSU to be able to turn on.
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post #4 of 5
Um what about all the other colours? Like purple, grey...? Unless you plan on re-wiring your entire PSU from scratch you don't need that info for sleeving your psu. Just complicating things for the guys.
post #5 of 5
Correct, no need in knowing when sleeving. Just mentioning them because he asked. He probably would like to learn what each is. It's good to know.

Ohh and:

Purple = +5 VDC Standby Voltage (max 10mA)
Gray = Power Ok (meaning, +5V & +3.3V is ok)

http://www.hardwarebook.net/connecto.../atxpower.html
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AMD Phenom II X3 720 @ 3.6 GHz Gigabyte GA-MA790XT-UD4P Gigabyte 4870 1 GB 2x2GB OCZ DDR3 1600 MHz 
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600 GB Seagates Windows XP Pro SP3 Envision CRT Logitech Cordless 
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My System
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CPUMotherboardGraphicsRAM
AMD Phenom II X3 720 @ 3.6 GHz Gigabyte GA-MA790XT-UD4P Gigabyte 4870 1 GB 2x2GB OCZ DDR3 1600 MHz 
Hard DriveOSMonitorKeyboard
600 GB Seagates Windows XP Pro SP3 Envision CRT Logitech Cordless 
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SilverStone DA850 Black Cheiftec Dragon Logitech Cordless Optical ATK 
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