Shortening PSU cables - anything to watch out for?

[Valantar]

I'm moving my build from my aging Fractal Define R4 to an NZXT H200i. Getting an EVGA G2 750W in there will be a squeeze, so I'm planning to shorten my GPU and 24-pin power cables (and the EPS, if needed) to cut down on clutter. The case will be sufficiently packed with radiators, hoses and the pump+res, don't need excess cabling making even more of a mess.

First things first: I have neither the time, patience, money or interest to go full custom cabling. I'd like to keep the in-cable capacitors too - they're lumpy and awkward, but I'll take any ripple smoothing I can get. I'll probably cobble together a kinda-custom SATA power cable; I have some 5-strand ribbon-style wiring and push-in SATA connectors lying around for that purpose already.

My plan for all the big cables: take the stock cables, remove the PSU-side connectors, cut each wire to length and crimp on new terminals, re-using the original connector housings. Sounds simple, no? That's what's making me think I'm missing something.

I think I have all the tools I need: a crimper, a whole bunch of terminals (at least twice the amount needed, so plenty of margin for practice and messing up), pin remover tools, heat shrink, wire strippers and cutters, and a bunch of zip ties. Can't really think of anything else I'll need.

The only thing I understand I need to watch out for is pin orientation when crimping on the new terminals, so that I don't have to twist the wires unnecessarily to get them where they need to go. I suppose I should avoid damaging the existing cable sleeving more than what's necessary given that it's already rather loose. And I'll give myself an inch or two more slack than I think I need, to make sure I don't suddenly shorten the cables too much. Or course I'm terrified I'll get some wires crossed in this process, so I'm planning to remove, cut, crimp and reattach one wire at a time to avoid toasting anything. If this doesn't work, I'll label each wire as I go. I also understand that I should pre-crimp all the terminals I need to an almost-closed position ahead of starting work on the wires, to simplify insertion.

Am I missing anything?

 

[Micrornd]

First things first: I have neither the time, patience, money or interest to go full custom cabling. I'd like to keep the in-cable capacitors too - they're lumpy and awkward, but I'll take any ripple smoothing I can get.

Slightly OT but, I've never seen or heard of this, pics, link, docs ? Anything to further my education?
I don't see EVGA bragging about that anywhere (and they love to brag)

The only thing I understand I need to watch out for is pin orientation when crimping on the new terminals, so that I don't have to twist the wires unnecessarily to get them where they need to go. I suppose I should avoid damaging the existing cable sleeving more than what's necessary given that it's already rather loose. And I'll give myself an inch or two more slack than I think I need, to make sure I don't suddenly shorten the cables too much. Or course I'm terrified I'll get some wires crossed in this process, so I'm planning to remove, cut, crimp and reattach one wire at a time to avoid toasting anything. If this doesn't work, I'll label each wire as I go.

That's a good plan. Just go slow and methodically and double check your work.
Take a before picture or and/download the connector layouts and color code for reference JIC

I also understand that I should pre-crimp all the terminals I need to an almost-closed position ahead of starting work on the wires, to simplify insertion.

I done many custom length cables and never needed to do that, seems like it would just make the wire much harder to insert properly. Perhaps that info came from someone with a poor/wornout crimper.