Motorcycle Questions? Ask a Mechanic.
Hi and welcome to the site, I’m Louie. Sorry you had to wait awhile but I’ll do my best to help.
Initially, which ignition coil; for the front cylinder? ...or the rear?
Still, both ignition coils receive IGN+12V through an orange/black wire from the Engine STOP/RUN switch. Then each ignition coil is driven by a switch to ground pulsating signal from the ECU.
If a coil keeps burning, then a likely possibility is that the ECU is faulty and sending continuous signals to the ignition coil rather than in pulses.