Simple question about the PSU->floppy connector hack

[AmigaMance]

  Hi.
 I don't have any stability problems, but i want to do it anyway.
 So, i checked the voltages of the floppy connector: +12v, +5v and... 2 grounds? Or is it one ground and one shield? In that case, which is which?
 Should i connect both grounds at the ground cable of the PSU or one is enough?

  Thanks.

[AmigaMance]

@Pyrre
 You're right.
 I just noticed that the PSU cable has 2 grounds too. I think it's just a split cable leading to 2 outputs, i don't see any differences between them.

[AmigaMance]

Ok. I short-circuit the two grounds into one, applied the hack and the power led doesn't dim on high CPU load like it used to. Or rather it does dim but it's hard to perceive now.

[AmigaMance]

@Zac67
 I'm not sure which ground belongs to the +12 and which to the +5v. :-? It would be a simple task if the PSU cable was the standard, 4-Wired +12-0-0-+5, but i cut a 6-wired one and connected the appopriate voltages to the floppy connector.
 I did that, simply because i don't use these 6-wired plugs and didn't mind waste them, while i use both of the available +12-0-0-+5 plugs.
 Then, i measured the voltage between the two grounds, saw that it was near zero and so i short-circuit them.
 Is this dangerous or just inefficient?

[AmigaMance]

Which of the ground returns you use doesn't matter, but the point is to use one ground return for each power line - the point I'm trying to make is that it's not only important to properly supply power to a device, you'll also have to supply a clean ground return.

 Got it! Thank you Zac. I will connect each ground properly.

[AmigaMance]

r6stu wrote:
What hack are we talking about pleasE? is there a link?

Thanks

 I'll have to search for a link but it's fairly simple:
This is mainly useful for heavily expanded Amigas. You just use a split cable to send current from the power supply unit, straight to the floppy disk connector.
 This will ensure that all cards will get enough power.