My headlight went out on my cbr 954 - 2003 Honda CBR 954 RR Fireblade

SOURCE: my cbr 954 rr headlight both high beam and low

Yes - and there is a fuse for just those items. The other possible cause is a bad starter button. When you push the start button, it does two things: activates the electric starter - and cuts power to the headlight until the button is released. So, if it isn't the fuse, it's probably the start button.

SOURCE: My 2001 honda cbr 929

Replace the voltage regulator before it kills the rest of the system.