Phak 1 I guess you could wire them in series to create a single 12 volt load,mine are in paralell and here in deer country you need loud horns. Scared some off last week !!
Good Idea! I’ll wire them on the bench to see how they sound.
I wired my horns in series when I switched to 12-v. I didn't want the first in the series to be grounded so I used several sheets of plastic (from a plastic milk jug) under its base and nylon bolts and nuts to hold it on the firewall. I don't know if this was necessary but it seems it couldn't hurt.
Another good Idea! I’ll have to persue this if I like the way they sound.