Your battery charger may not put out anything unless it senses some voltage in the battery it's intended to charge. But you should be able to test using a 12V battery without damaging the horn. Just don't leave it connected very long.


Kevin
1951 Chevy 3100 work truck
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Photos
1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.