French Police Siren Conversion

This beautiful bike had a rare 1960s siren originally used on French police bikes.  The trouble was the bike was 12 v and the horn was meant for a 6v bike!  The owner had been using it on rare occasions anyway, but for reasons of safety (safety of the horn / reduced fire hazard) and more accurate sound reproduction we upgraded the system by building and installing a voltage divider.  Bob who consults on some of our more complicated electrical jobs built this heavy duty voltage divider and we went about installing it and the relay controlling it.  The relay went under the tank with the factory relays and the voltage divider we placed under the pillion seat for reasons of heat dissipation, protection from the elements, and because it was the most unobtrusive place to put it.  Make sure you play the video to hear this beautiful siren wail!

^Quinxy