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Fuse or even wiring burns through
|Should your problem relate to
a AC System from us,
than please read here
Fuse burning means you have more current flowing than should be. In other words there is somewhere a shortcircuit (or partial shortcircuit) outside the regulator in the motorcycle grid.
Here only systematic searching will find the problem.
Than reconnect the battery. Should the fuse now stay, reconnect the
horn (test the horn!), than one after one reinstall the light bulbs back
and keep checking.