this one is making my brain hurt.
i just got my brain pretzled on a new vespa's starter circuit ,but you know what....
you may have a bad connection at the pickups. when you put pressure on the wires with your probe you have a connection.
When you let off the pressure and measure from both terminals at the connector the circuit opens up.
put both probes in the connector and move the wires at the pickup to see if you get a reading
I think I found the issue with my pickups, it was actually my multimeter, I guess one of the pins wouldn’t make a good contact so I cleaned it off and used the paper clip trick and now I get the same ohms at the plug every time. I guess that clears the pickups from being the issue.
Plugged the pickup coil connector back into the igniter and I get ohms readings every time with the cleaned multimeter and paper clip trick. Checked to see if spark came back and nothing, on any cylinder.