Horns - 6 to 12 volt

[Fordestes]

I connected two 6volt horns to 12 volts in series by mounting on a wood insulator, had one a little louder so I switched positions and was so loud every neighbor on the block looked out their front door to se where the freight train was coming through, Had one hell of a shock when I touched the wires to the battery. I didn't use a relay I had just purchased them from a swapmeet and was testing them.I only had a 12 volt battery.