well i played around with it las night
its not the fuse,
but the boss kit i guess has to be mounted in a certain position coz when i remounted it the horn seems to go off all the time
there is a little brass nob thing just above the hub and this connects to the base of the boss kit
all i have to do is work out how the kit shold be mounted and get the horn button fixed up
had to do a dogy tape job tho last nite coz i was beeping everyone on the road involuntarily.