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Old 11-17-2019, 06:56 PM   #1
Habusailor
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Default 6 or 12 volt

I know I have seen the answer to this many times in the Ford barn, but what year did Ford go to 12volt neg earth?


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Old 11-17-2019, 06:59 PM   #2
dmsfrr
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Default Re: 6 or 12 volt

- 1956 -
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Old 11-18-2019, 09:02 AM   #3
Habusailor
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Default Re: 6 or 12 volt

Thanks, I thought it was in the mid 50s somewhere but couldn’t remember the exact year


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Old 11-18-2019, 01:55 PM   #4
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Default Re: 6 or 12 volt

Habusailor,
Depending on what you're working on this added info may be helpful...

Most electrical parts were changed from 6v '+' ground to 12v '-' ground for '56.
There was another change to the Dash Gauge circuit from '56 to '57.
'56 gauges were built for a full 12 volts, '57+ gauges use 12v power, but there is a voltage reducer/regulator in-line before the gauges. (two example photos below)
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Attached Images
File Type: jpg dash gauge voltage regulator.jpg (18.9 KB, 3 views)
File Type: jpg CVR - '57 + voltage regulator.jpg (49.9 KB, 3 views)

Last edited by dmsfrr; 11-18-2019 at 04:00 PM.
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