Just installed one of those loud SN air horns to my Vespa GTS 150 3v. Followed the instructions to a "t" from the scooter west website and additional websites and info from this forum but.....
every time I press the horn button, I blow my 7.5 fuse and I get no sound from the newly fitted item.
All connections are fine and fitted correctly (made myself). Also double checked with a multimeter. All fine.
Is there any electrician out there that knows a thing or two about these horns and knows the answer to this?