Join Date: Sep 2018
Location: West Coast Florida
I think you guys have it figured out from the solenoid wiring standpoint. I just came up with a bright idea on the possible function of the 2nd spark unit (that due to the tight-lipped and likely deceased Japanese engineers, probably can't be proved/disproved)...Bikes have a separate switch that actuates the starter. In other words, there is no unitized switch that both controls the ignition and accessories. That said, there is no ignition switch position that kills the accessories while cranking, so whatever is "on", is "on" during cranking the bike. My theory is that since the second spark unit is in parallel with the first unit, you guys are right on with the similar function to the bypass circuit on the old coil resistors. My guess is that the second spark unit is a second set of capacitors that gets brought in as a boosting capacitor discharge unit to boost voltage to the plugs during the load on the battery during cranking. It may even be a "shower of sparks" CDI to aid in cold starts. My guess is that in later models, they eliminated the 2nd unit by increasing the capacitance in the primary units, running a " hotter" ignition full-time. Just my $.02..
If it jams, force it. If it breaks it needed replacing anyway.