Need help with 24 pin wiring please.

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Optical2305

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Feb 14, 2014
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So I removed all the wires from my 24 pin connector to sleeve them individually and when I got to looking there were three different size wires. This being the first time I did this I didn't know which wires went where. I had already sleeved my two 8 pins wires just before and had no problem. When I tried to get into contact with EVGA they gave me a link to a post and told me the connectors were a 1 to 1 so I was to just match them to the other end. But with there being three different size wires I would think some have to go in a certain spot but they didn't help me with that. I have four 22 gauge, four 16 gauge, and and sixteen 18 gauge wires.

The power supply is an EVGA SuperNOVA NEX650G.

This was the pic that they sent me to. At first I put the 22 gauge wires in pin numbers 8, 9, 14, and 16. And the 16 gauge wires in pin numbers 1, 2, 12, and 13. Then all the rest with the 18 gauge wires expect for pin number 20, I put nothing in that one. I tried using a jumper to see if it would turn on a case fan and it turn that on along with the fan on the psu itself. So when I tried to hook the psu back up to my pc and hit the power button nothing happened. Maybe some of you can help me figure out which wire goes where because my other two options are try to find another 24 pin connector to buy or buy some 18 gauge wire and rewire the whole thing with 18 gauge.

http://image.pinout.net/pinout_13_pin_files/24-pin-atx-pinout.gif
 
Solution
techgeek
Again where you put the different gauge wires shouldn't matter as far as getting it to power your system. The only issue with having them in the wrong spot is when you start to draw a lot of current through a small gauge wire it will get hot (the wire not your power supply) and if it gets hot enough, it will melt the insulation. So even if you don't have the gauge of wires where they are supposed to be, if you have the connectors wired 1 to 1, your system will start.

So again you must have at least two wires swapped, if not more. You need to be very careful about having the voltage wires placed correctly because if you send 12V into a 3.3V or 5V input it will blow up your motherboard and possibly more.

Chances are if you didn't...
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Optical2305

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Sorry I should have said this in the first post but when EVGA wired it they used all black wires and not different colors.
 
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clutchc

clutchc

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Well, how did you mark them when you removed the 24 pin connector?
 
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techgeek

techgeek

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Well that isn't smart of EVGA, I looked at a pic of your supplies ATX cable, are all the wires really black? If so that is going to make finding out which one is which very difficult. If the wires were colored as per your diagram, it should/would be very easy to get them back to their correct locations.

Did you removed the sockets from both sides of the cable? If not use a resistance meter and measure each socket on the connector you didn't remove from and find the matching wire at the other end. Then place it in the matching location on the connector you did remove the socket from. That's what the EVGA told you, they are 1 to 1. This means pin 1 on one side is pin 1 on the other, pin 2 on one side is pin 2 on the other, etc. It should be really easy. Ring out each wire one at a time.

Suggestion, if you decide to do some more sleeving do one wire at a time if all the wires are one color and can't be told apart from each other.
 
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Optical2305

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I took them all out before seeing where each one went two. I didn't think they would use three different types of wires for the 24 pin connector. I tried putting them back where I thought they went but my pc didn't turn on. I have my old psu in atm and it works fine so it have to be the 24 pin connector from my new psu.
 
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Optical2305

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Yes I did remove the wire from both sides of the socket. I should have paid more attention to what I was doing. And if I do do this again I will do one at a time. It would have been nice if when I got into contact with EVGA the could tell me what gauge wire went where but they guy just gave me that link and told me it was a 1 to 1.
 
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clutchc

clutchc

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You removed the wires from the 24 pin connector w/o marking them?! How did you expect to know what terminal they went back to???
 
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Optical2305

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Like I said when I wrapped the two 8 pins all the wires were the same and went in 1 to 1. When I started on the 24 pin I figured they would go 1 to 1 but didn't know they would use different wires.
 
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Optical2305

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That's what me and one of my friends were talking about. I have four 16 gauge wires and I'm trying to figure out where they go, I thought in pins 10 and 11 but I do not know where the other two wires would go to because those are the only + 12 volt. I tried the 16 gauge wires in all the orange sockets and the 22 gauge in the blue, green, gray, and purple, but it didn't work.
 
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techgeek

techgeek

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Again where you put the different gauge wires shouldn't matter as far as getting it to power your system. The only issue with having them in the wrong spot is when you start to draw a lot of current through a small gauge wire it will get hot (the wire not your power supply) and if it gets hot enough, it will melt the insulation. So even if you don't have the gauge of wires where they are supposed to be, if you have the connectors wired 1 to 1, your system will start.

So again you must have at least two wires swapped, if not more. You need to be very careful about having the voltage wires placed correctly because if you send 12V into a 3.3V or 5V input it will blow up your motherboard and possibly more.

Chances are if you didn't get any response when you tried to power up, you didn't have PS_ON in the right spot. Once you think you have everything wired correctly you should try to power it up not connected to your system. This requires grounding PS_ON.

This Link shows the orientation of the connector in relation to where pin 1 is better than the one you've been using
 
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