J-pin plugs are awesome for saber wiring. I scavenged a bunch of them out of a couple of dead PCs for use in my saber. Instead of buying a fancy DIY kit though I just picked up a PBC-mount 10-pin IDC and hacked it up to make a wiring harness. Since all my switches and stuff are in the foregrip and the guts in the lower part, it makes it easy to disconnect it all to access the electronics without having to mess with taking the switches out of their mount holes.
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