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Purdy Swoft · 08-19-2019, 07:07 PM

Swap the wires to negative on the coil , ammeter and the battery . This will work if you install a twelve volt battery connected with negative ground . I run some of my model A's on twelve volt positive ground with all new original style wiring harnesses from Brattons and no changes to the wiring is needed .

08-19-2019, 07:07 PM	#2
Purdy Swoft Senior Member Join Date: May 2010 Location: Alabama Posts: 8,099	Re: 12 VDC Wiring Swap the wires to negative on the coil , ammeter and the battery . This will work if you install a twelve volt battery connected with negative ground . I run some of my model A's on twelve volt positive ground with all new original style wiring harnesses from Brattons and no changes to the wiring is needed .