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Old 03-31-2017, 08:04 AM   #9
Flat Ernie
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Join Date: May 2010
Location: 74FL
Posts: 323
Default Re: 6 to 12 volt horn

It should have been 'plug and play' - there really is no difference - neither the horns nor the relay care about polarity.

The 6V horn relays have heavier internal contacts and are better suited for the higher current draw when running early horns on 12V. My favorite horns were a pair of '51 F1 Trumpets on 12V - angry sounding!
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