Wiring Wiring 22 of 47 Once you have everything fitting it is time to route the wires to their connection point. I’m not going to go into the wiring because it has been done so well already. Just follow this link http://www.wikihow.com/Convert-a-Computer-ATX-Power-Supply-to-a-Lab-Power-Supply If you are really sharp you will have noticed that my second post is labeled -5v but I have the 5vsb hooked up to it and you would be right. After realizing that there was no -5v in this psu I decided to go ahead and make it hot all the time. This way I could quick test LED’s and such without having to turn on the power.