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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

Alternator wiring 3 wire

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Old May 18, 2019 | 07:58 AM
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Alternator wiring 3 wire

Need help with correct wire location

black?
orange?
yellow with black?

thanks for the help

 
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Old May 18, 2019 | 08:33 AM
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ford390gashog
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Your main charge lead is way to close to the cause and the terminal needs to be flipped and the exposed terminal insulated from the case. The white/black goes to stator and the orange goes to the field terminal.
 
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Old May 18, 2019 | 11:53 AM
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Originally Posted by ford390gashog
Your main charge lead is way to close to the cause and the terminal needs to be flipped and the exposed terminal insulated from the case. The white/black goes to stator and the orange goes to the field terminal.
awesome thanks
 
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Old May 18, 2019 | 06:20 PM
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Hard to see one if it's there, but is there even a FLD cast into the case anywhere? In theory the STA should be the white insulator and the FLD should be the black insulator (was orange on some older units but I guess they ran out of reasons to use orange!) but I don't see either a STA or FLD marking.
Are they there and just not showing? I see the BAT and GRD, but even they're hard to read clearly.

And in case you were not aware, the metal ring tab that attaches it to the case is actually a small ground wire (black maybe with a red stripe) that runs up to the voltage regulator screw. Good to check that the other end is grounded then.

Paul
 
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