I didnt read the question... I installed my two 6V horns in my 50 Chevy
Well Heck 2 6V horns equals 12V

Glad you got the horns working. When it comes to overblowing
All you have to worry about is Parades and Traffic Jams.
Oh and this should keep you from blowing your horn at pretty girls


250 Integrated Head / 1981 C-10 Pick up.