can I test a mag horn from 1915 with a 6 volt battery as the car is away for the winter. I have found 3 two post mag horns and want to see if they work. Thanks Colin
Mag horns have no moving parts and operate on AC current.
They are similar to a telephone receiver. If you hook DC current to it, all you will get is a single click.
A battery will produce one click and only tell you that you have continuity. An AC train transformer or doorbell transformer will produce sound.
The answer is- no.
And when you hear them you'll probably start shopping for a mechanical horn. There's a reason so many people bought those.
you can run them off a coil just dont use the high tension side. cnarley
Very clever, Charley, thanks for sharing. I assume hooked in series with the coil primary, and a spark gap or spark plug across the secondary to protect that circuit? Best, jb
I you have a friend with a hand cranked coil tester they typically have the magneto output terminal on them for testing a horn. They are supposed to be adjusted finally on the car for maximum loudness while drawing about 2 amps from the magneto.
Thank you I will set up the coil tester and check them from that Cheers Colin