I thought in Italy the horn was the primary need, loudest horn has the right of way
if that 3 way switch was for signals, you should find it wired to a flasher unit someplace, otherwise it sounds more like a heater fan switch with the fuse on it - but sounds like someone already converted the lights for signals, with dual filament sockets/bulbs you're already set up, just need to add the proper signal unit to the column
also look in the tech tips for a good article on wiring aftermarket signal units
Bill
