KYT
Registered
Check that you have voltage coming out of the starter switch.
I had trouble with my 06 Katana headlights about a month ago.
but bike would start, just didn't have headlights.
what it came down to was, there's 4 contacts in the starter switch.
#1 comes in, and supplies power to #2 when the switch is at rest.
#3 applies power to #4 when the button is depressed.
3-4 supplies power to the starting systems, this disconnect of 1-2 cuts out the need of a relay for the headlight circuit
When you let go, it turns off the starter motor and reapplies power to the systems that are always on when the key is in the ON position.
My #2 contact was dirty, so my dash worked just fine, since it was a lower current draw, but my headlights wouldn't work even though they were getting 12v.
They weren't getting enough wattage or whatever its called.
I don't know if the Busa is wired similarly or not, but its something else to check.
Good luck
I had trouble with my 06 Katana headlights about a month ago.
but bike would start, just didn't have headlights.
what it came down to was, there's 4 contacts in the starter switch.
#1 comes in, and supplies power to #2 when the switch is at rest.
#3 applies power to #4 when the button is depressed.
3-4 supplies power to the starting systems, this disconnect of 1-2 cuts out the need of a relay for the headlight circuit
When you let go, it turns off the starter motor and reapplies power to the systems that are always on when the key is in the ON position.
My #2 contact was dirty, so my dash worked just fine, since it was a lower current draw, but my headlights wouldn't work even though they were getting 12v.
They weren't getting enough wattage or whatever its called.
I don't know if the Busa is wired similarly or not, but its something else to check.
Good luck