Will this connector wiring schematic work for bench-bleeding a pump?

[dowfry]

I'm currently making custom cables & would like to make a single connector that I can use to independently bleed the water cooling system.

Typically I need to find & get out the PSU box, molex cable, fan controller, spare 28-pin cable, and paperclip to bleed the system. Or the entire spare PSU tucked away.

I'd like to wire up this single 18-pin and leave it in the PC case for convenience, assuming it works safely.

It seems like it should work, but it's not clear to me if the absence of sense/pwm wires effect anything, or if a psu operates differently under this scenario

If it'll work safely, can I wire up an additional 4-pin fan connector that uses a 5v wire instead of 12v (to decrease pump speed)

I'd use this with pumps, and possibly 3-pin and 4-pin fans

System:
Corsair SF 450
Fractal Kelvin T12
optional NZXT Sentry Mesh 4-pin molex fan controller

Other potential pumps- Corsair AIOs, Swiftech MCP35x, who knows what else
Potentially testing 3-pin + 4-pin fans (unlikely, but it's nice to have the option)

Thanks for any advice

 

[confusis]

That would work perfectly. In fact, some manufacturers include an ATX plug with those two pins bridged for just this purpose!

https://www.newegg.com/Product/Prod...1&cm_re=atx_bridge-_-9SIAEAP6Y69681-_-Product