> To test a garage sale car horn I connected a jumper wire to the
> positive battery terminal and touched it to the spade connector while
> the horn was sitting on the car body. It honked once and quit. Did I
> do something wrong? The horn has "V. 12" on the housing next ot the
> spade connector. The only other lettering on the case says "FIAMM".
The horn is no good.
> I've taken the horn apart and can see no evidence of burns or fusing.
>
> I know my car has a "horn relay" which I think reduces voltage or
> current
It prevents the horn's high current draw from damaging the horn switch
wiring and contacts.