I have a power supply from an approximately 10 year-old HP computer that I want to convert to a bench supply. it's a 320W supply and the replacement part number is 613765-001. I can't find anything online that matches exactly what I have so I would like to confirm what some of the wires are for.

Here is what I have:
Green: PSON (Power Supply On) - Connect through a switch to ground to turn on supply.
Brown: +12VCPU
Yellow: +12V Main
Blue: -12V
Black: Ground
Grey: PGO (Power-Good Output) - Connect through LED and resistor to ground.
Purple: +12VSB (standby power). - Connect through LED and resistor to ground.

Questions:
1. Are the connections described above correct?
2. Can all the brown and yellow (12V) wires be connected together?
3. Does this supply require a power resistor between one of the 12V lines and ground? If so, which one?
4. Am I missing anything?

 

The answer to number three can be easily established by experiment. Try switching it on, PSON to ground, and if you get output voltages then you don't need a resistor. This won't damage the supply.

 

I put all the Yellows together and Blacks together, this is the 12V output, and put a 24 ohm 10W resistor on the 12v supply to pull 500mA to keep it running..

Unusual no 3V or 5V outputs..

 

No 5 Volts?

 

Yea, I thought that was strange too.

 

I put all the Yellows together and Blacks together, this is the 12V output, and put a 24 ohm 10W resistor on the 12v supply to pull 500mA to keep it running..

Unusual no 3V or 5V outputs..

Isn't the ATX standard that the minimum load should be on the 5V rail? I just built one of these this past week. Some references say you need to pull at least 5W but I was able to get it to come online reliably with less than 1 W.