My '71 Demon came out of factory with only one horn and a single green/red wiring from the relay, but the radiator support was ready to receive two horns (drilled holes)
So, I installed a pair of used Lo/Hi Sparton horns purchased here on the forum.
I use the original relay and just added a jumper between the two horns (I made this jumper from a piece of green/red wire out of an old dash wiring)
This way, it seems original... and works.
View attachment 1715979119
Francois.
