Reply To: Bike won’t start
Have you taken the tank off to inspect the harness for any signs of shorting or wiring burns ?
Was there any chance the old regulator likely popped one of the electrics ?
Horn is triggered by the left switch gear, disconnect it and see.
While it is apart, attempt to download the service manual on this forum , so it gives you instructions on getting an error code from the ecu (red icon will flash in a sequence which tells the error)
Check your neutral switch and clutch switch contacts/plugs = they would stop the bike from starting.
A bike violently loosing power with the horn blaring loud suggests either electric spike or a shorting somewhere but that is new to me also, all my years of dealing with hyosungs (mine and customer ones), this one is strange considering the bike is only 2k miles old. Practically young!
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Starter is grounded to the frame and battery, so the long cable is the positive from the solenoid yes.