The plug looks identical to the st, pretty sure the wire colors are the same too. Small, 4 pins and the extra BL/R wire. I have a bare stator plate that I got from cjpayne. I'm too far into figuring out the wiring for my 12v Z50 engine to change the plan now, using your advice. 2nd regulator is due here on Tue. and I've been studying the wire harnesses and such. I'm starting to get it, I think. I don't have time to mess with this zb50 motor right now but I was gonna pull the flywheel for a look and then put it all away. You are right tho, the stator is the real prize here. The harness too, I think the zb50's have turn signals. Any way you shake it, well worth the $87 to me.The Honda 12v stator is a nice acquisition. I believe they were all wound the same. I'm curious, is the plug the same as your ST? Looks like the 12v CT. It will probably bolt to your China stator plate. That wire harness will show you how to do your 12v Z and it's small too. Just need a 12v switch.
I think I might have scored with this. Not cheap, but not bad. I've rarely ever seen H specific manuals. Usually they say CT70 CT70H, both on the cover. Honda 1970 1971 CT70H Minitrail Owners Manual | eBay
This may be a HK1 manual and that's why it's different.
This seller has a Z50 K1 NOS manual also, if you're lookin.