Thanks to Dave for the picture and description of direct wiring from r/r to the battery + side. I now have the same mod on my bike.
However still not charging. After the mod and with great optimism I started the bike in a fully charged battery, ran a volt meter across the terminals and got 12.3v. Revved 'er up and no real change to voltage. Turned on my driving lights... no change, hmmmmm. Tested for voltage while cranking it over... no significant change. Hmmmmm x2. Went out for a ride (rode with a fully charged battery, driving lights off) and stopped frequently. After each stop she started easily. Got home... shut it off for a few minutes, then started it again and perhaps noticed a weaker crank over.
But for sure I'm not getting 13-14 volts under any circumstance tested. I'm thinking I'll have to tap into the alternator now to see what reading I get there. I'm not sure how to do that... anyone?