Motorcycle Questions? Ask a Mechanic.
Your kill switch is not tripped?
When you jump the starter, will the engine start and run? Can you kick start it, and it will stay running? You are just missing the starter circuit? DO you have any aftermarket electrical parts that tie into the ecm, like a CDI box for tuning?
Have you checked to see if your fuel pump operates when you cycle the key? And have you checked for spark at the plug when cranking? My first impulse is that your ECM has failed internally., but best to check other functions to see if they operate.
There should be a set of fuses right at the battery, the positive feed from the battery should go straight into the fuse strip