I have followed the guides on the internet, in short to start the second PSU short the green wire on P1 with a black ground wire and the PSU will start.

This works, my second PSU does start. But if i attach any harddrives to it it turns itself off after 1-2 seconds. If i only connect fans or nothing it will remain running.

If it mathers the PSU is from colermaster. They're both ATX powersupplies, and i have tried to use 2 different ( But same brand/model) PSU as the second PSU.

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My quick recommendation would be to avoid all of this by buying a much larger single power supply. – Troggy Jul 13 '10 at 17:46
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Nobody has 1k watt powersupplies in stock around where i live. would also be fun to this just for the geek fun – EKS Jul 13 '10 at 17:54
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Instead of just jumping it out, you could try this adapter cable.

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It shutting off under load sounds like a loose connection or bad PSU to me. I have this configuration working at my house. – aking1012 Jun 27 '11 at 18:34
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