2001 Yamaha 1000 Fazer
I pulled the ignition fuse
there is power coming from BOTH terminals with the fuse pulled !!
I am guessing you checked that with a voltmeter?
A voltmeter needs only microamps but such a tiny amount of current hardly qualifies as power. A backfeed because of leakage from something will register a voltage, especially with a digital meter but I wager there wouldn't be enough current to light a bulb - which is why I mostly use a testlamp for such checks.
Most modern ignition/engine management systems use more than one supply and internal leakage between them might be normal or might be a fault. Reference to a wiring diagram might help. Certainly if both fuse terminals have real power - that wouldn't be normal.
on Aug 20, 2020