Ok, thanks to the help from above, it’s all done with everything wired to original, AND, everything works!
Getting a great kick out of this little bike.

Thank you. At this point I’m not certain which direction I’ll go.

The key switch, the manual I have is ACE 90/100 and apparently the 100B wiring is vastly different than the 90

Thank you! That makes my switch line up with the wire colors.

Just picked up an ACE100B 1971. Runs good after a little carb tweaking and now I want to get the wiring harness back to original. It has lights, Speedo, horn and all, but it has been “violated” regarding the harness. I have the repro service manual that has the wiring diagram but doesn’t match up to...

Is there a reprint of the owners manual for a 71 100 B somewhere?