05-14-2022, 12:28 PM | #1 |
Member
Join Date: Dec 2012
Posts: 46
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Horn wiring
This is off a 1936 car. I believe it is a Sparten horn. I want to wire it up but have no idea as to what pole is what as far as polarity is involved. It is a positive ground car. It will honk off a spare battery either way, but it would be nice to solder the leads correctly the first time. Any ideas? Thanks...
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05-14-2022, 07:32 PM | #2 |
Senior Member
Join Date: May 2010
Location: Melbourne Australia.
Posts: 2,079
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Re: Horn wiring
There should be a twin brass connector terminal inside the horn where the two harness wires push into. That terminal appears to be missing on your horn. The horn does not care about the polarity and will work OK either way. Early Fords were positive to ground/chassis . Regards, Kevin.
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05-15-2022, 10:55 AM | #3 |
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Join Date: Jun 2010
Location: San Antonio, Texas
Posts: 16,436
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Re: Horn wiring
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12-volts might be a bit much for an old horn for those that change. Most folks that change polarity also change voltage. On a 6-volt system like the OP has, I just leave them positive earth/ground. Vibrator circuits and series wound motors can work normally with polarity changes. Radio sets with the old vibrator coils can also work either way. Modern solid state vibrator replacements are polarity sensitive. Last edited by rotorwrench; 05-15-2022 at 11:01 AM. |
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