Ps2fixer (Cory) responded to a PM I sent him on 3WW. Here’s the response I have asking about the wire harness CDI plug:
If you need the harness side, they aren't in product, have to hack one off an old harness (common for 84-85 machines including some motorcycles). If you need the CDI side, I have those, have to solder wires on thought. I use them to make adapters for a guy that makes CDI's using the modern 4+2 plugs. The 4+2 pins work in the round housings well enough, they are made for a rubber seal but you don't use the seal, so it's just to hold the wire to keep from breaking the wire over time (like a stress relief).
If you need any more info, let me know. I have the original part numbers and such from the orig mfg. I've been looking on and off for years for the harness side of the connection. It's possible to have them reproduced in china, but min qty is like 10,000 and would probably cost like $7000. If I expected to sell 100 harnesses with that connector, that would put the cost of the connector at $70 each. Napkin math, but kind of explains why no one else has invested in them either.
Thanks,
Cory