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…from past threads seams to be missing some details and I hope some of those past contributors (or anyone) can fill in some gaps for me. Here is the scenario I was thinking of: Fieldsheer Air-Tex mesh jacket with zip-out “water-resistant/thermal liner” (on-hand). 30-40 feet of 30 AWG multistranded Teflon coated wire ($4) WarmGear Heat-Troller Single Portable Temp-Controller WG-SPCOAX ($70) WarmGear SAE to Coax Jack (Female) WG-DCJK150SAE ($5) In theory, I could plug the SAE-to-coax adapter to the existing SAE jack that came already attached to my battery, then plug the heat-troller coax to the coax adapter (in lieu of using the battery harness that comes with the heat-troller), and plug the jacket coax into the other heat troller coax. (right?) …but naturally I would have to wire the jacket liner in such a way as to end up at a coax connector. This is where I am lacking information. I assume I would turn the liner inside out (?) and lay out the 30 gage Teflon wire back and forth around the jacket and hitch it down so it will stay put. I further assume I would leave a pigtail of wire near the waist/bottom for attaching to the coax jack. What I don’t understand is how to attach the 30 AWG (isn’t this a single wire?) to a coax jack. I thought I read somewhere that the 30 gage wire has to be upsized into an 18 AWG wire (if so, what kind of wire is this [two-wire?]? I.e. red/black zip cord from bulkwire.com? how is this connection accomplished?) and then the 18 AWG is attached to the coax jack (how is this accomplished? Where can I find a coax jack to match?). I’ve seen all the comments about just buying a heated vest, but dang they’re expensive. This looks like a project I could spend the summer doing since I won’t need the liner in the jacket. I’m pretty good with a variety of hand and power tools and a civil engineer by education (but by definition merely dangerous in the electronics department). Bottom Line: I don’t quite understand how to make the wiring connections for a DIY heated jacket. Hope someone can help. Thanks. David