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Positive or negative ground for 48'' ..8n

R

Red1

Member
Keep reading about 8n tractors....6 volt system with the battery

positive post used as the ground...neg post to the solenoid..Is that

correct?..mine is a front distributor with the coil on top, and the

battery negative post is grounded...tia..
 
If everything else is correct, it will run either way. Slight theoretical advantage to positive ground.
 
(quoted from post at 13:40:57 09/28/20) Keep reading about 8n tractors....6 volt system with the battery

positive post used as the ground...neg post to the solenoid..Is that

correct?..mine is a front distributor with the coil on top, and the

battery negative post is grounded...tia..
Click to expand...
f working now, you best leave it as is, because in changing it, you may end up with it not working.
0OQIfcz.jpg
 
It was originally 6 volt positive ground

If converted to alternator, unless it is a special modified alternator it should be negative ground. As said if working leave it alone.

Just because it was born positive ground doesn't mean it must stay that way. Ground is dictated not by what it was originally but how the system is configured at the present time.
 
Get your ESSENTIAL MANUALS out and read. ALL FORD's (not just tractors) were 6V/POS GRN up til the 12V diesels. Many N's have been switched out to 12V/NEG GRN but if either system isn't done correctly, will cause non-starting issues. Just because you have a 6V battery, or a 12V battery for that matter, don't assume your wiring is set up correctly for that system.

CORRECT FORD 8N ELECTRICAL SYSTEMS - 6V & 12V:
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8N 12V SWITCHOVER ON THE ANGLE (SIDE) MOUNT DISTRIBUTOR:
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*PICTOGRAM courtesy of JMOR

OEM 8N WIRING(6V/POS GRN) AFTER S/N 8N-263844 WITH ANGLE (SIDE) MOUNT DISTRIBUTOR:
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FORD 8N TRACTOR WIRING DIAGRAMS:
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FORD 8N TRACTOR ESSENTIAL OWNER/OPERATOR/PARTS/SERVICE MANUALS:
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Tim Daley(MI)
 
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