Hey, everyone.
I have a few stunt Ultrasabers that I'd like to upgrade to using 18650s, with an internal recharge port and chassis support. I've found that taking the batteries in/out every week adds up to a lot of wear and tear, so I'm trying to minimize that. (Plus, an 18650 just has a lot bigger charge than 2x lithium ion or 4xAAA.) The idea is: pop off the pommel, and only slide the chassis out far enough to expose the recharge port -- so hopefully this is inflicting a lot less wear & tear. (I don't want an external recharge port for a variety of reasons.)

A friend has already done this conversion, so now I'm trying to duplicate it - but my friend does a lot of saber wiring, so he has a lot of supplies lying around that I don't. So I'm trying to make sure I get everything right the first time.

Here's the parts list I have:
* 18650 battery pack
http://www.thecustomsabershop.com/Pa...?ItemId=494323
* acrylic chassis disk for 18650
http://www.thecustomsabershop.com/Ac...4&Options=1179
* opposite chassis disk for 1.45" saber
http://www.thecustomsabershop.com/Ch...?ItemId=494325
* 4x stainless steel 4-40 hex nut
http://www.thecustomsabershop.com/St...?ItemId=494326
* 2x 1/2" brass 3/16" OD spacer
http://www.thecustomsabershop.com/12...?ItemId=494327
* 4x 1" brass 3/16" OD spacer
http://www.thecustomsabershop.com/1-...?ItemId=494328
* 4-40 all thread
http://www.thecustomsabershop.com/St...?ItemId=494329
* power jack
http://www.thecustomsabershop.com/Sw...?ItemId=494330
* power jack chassis parts
http://www.thecustomsabershop.com/Ac...1&Options=1187

What I could use guidance on:
* which JST connectors do I need? I think I only need 1, but I could use confirmation of such.
* what gauge wire is recommended?
* likewise, what size heatshrink should I get for such?

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I'm guessing there's a zillion posts on wiring diagrams; I'll do research on existing forum threads to find one and link it in here later.