Not getting 12 volts to coil

I see the carb soleinoid is part of a cluster which feeds the dark blue wire to the + coil !
Yes. This opens the throttles a little more when engine is running than when the key is off. It was used because the idle settings for reducing emissions made the combustion chamber a little hotter at idle and required a little more throttle opening at idle. Having the throttles close more when the key was off prevents run-on.

So, if I follow the blue wire, it seems to go to a 'connector', on the valve cover, which I've never seen or heard anyone talk about. I have not opened it up, but I hope it has 6 male connectors. Now these wires open up a whole new world, and could be right.
That connector seems unique to the engine package. I now understand what the mystery is and why you think the harness may be for a different engine.
Its possible someone changed the routing, or I supposed used a harness meant for a different engine.
upload_2021-6-16_23-1-17.png

You can test out the where each of the connections (1-6) go using your ohmmeter.


Also, one of the two smaller connectors at the bulkhead has room for 4 male connectors, but there are only 2 being used.
Looks like one is reverse lights/starter safety while the other is wiper motor.

. I have the rallye dash - but I don't see why there is not an ammeter-needle gauge, since that set-up has caused so many problems.
Your ammeter is missing its needle ??
Let's not bring up the Chicken Littles of the world. We've been doing pretty well so far. You now know how to measure very excessive resistance and how to test for smaller resistances using voltage drop. The needle in the ammeter is moved by the magnetic field of the current flowing in the metal plate. The mechanism itself has no electric parts.