The Ford Barn

rustynut4247 · 09-01-2025, 02:09 PM

which is correct pos or neg ground or does make any difference ? also does the volt regulater pos or neg ground and i have a parasite draw someplace

38 coupe · 09-01-2025, 02:17 PM

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I'm not 100% sure what your question is, so my response is a bit generalized.
The original 6V system is positive ground. It matters for your generator & regulator, and for ignition system efficiency (spark jumps easier one way than the other when hotter ground vs colder ground). Everything else will work pretty much the same.
Most 12V conversions use negative ground. Again the generator & regulator (or alternator, whatever) will care which is ground, and ignition efficiency is better when the proper side of the coil is ground. Any modern electronics will probably care.

09-01-2025, 02:09 PM	#1
rustynut4247 Senior Member Join Date: May 2017 Location: rochester hills mich Posts: 124	47coe which is correct pos or neg ground or does make any difference ? also does the volt regulater pos or neg ground and i have a parasite draw someplace

09-01-2025, 02:17 PM	#2
38 coupe Senior Member Join Date: May 2010 Location: South Texas Posts: 2,135	Re: 47coe Sponsored Links (Register now to hide all advertisements) I'm not 100% sure what your question is, so my response is a bit generalized. The original 6V system is positive ground. It matters for your generator & regulator, and for ignition system efficiency (spark jumps easier one way than the other when hotter ground vs colder ground). Everything else will work pretty much the same. Most 12V conversions use negative ground. Again the generator & regulator (or alternator, whatever) will care which is ground, and ignition efficiency is better when the proper side of the coil is ground. Any modern electronics will probably care.