My nice loud Stebel Nautilus horn has died. Well the horn is almost certainly fine, but suddenly there's no more juice to run it. I connected up the old horn, and that doesn't work either. The relay clicks away when the horn button's pressed, but horn no blow. All the connections I can access seem okay, so nothing's vibrated loose as far as I can tell. I'm loath to investigate much further myself, as I don't know my ohms from my amps... Can anyone recommend a good sparky who knows bikes, and isn't a zillion miles away from the Wheelers Hill/Glen Waverley/Mulgrave area?