G1 alternator
FTE Legend
Joined: May 2008
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From: In my own world
Here's a thread I helped a guy with, read through, there are pictures, and directions
Jim taught me, I pass it on
3g alternator help?
Jim taught me, I pass it on
3g alternator help?
Thread Starter
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Junior User
Joined: Aug 2013
Posts: 86
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Ok some im gunna get the alt going today nuts im running into some issues with that wiring diagram IASF is the order mine VR is in but I is my orange and black and goes to the batt+, A is yellow and goes to the batt post one the alt, S is green ans im assuming goes to the gaugr cluster, and F is orange with green trace and goes to the field post. also I have the S post one the alt going too my electric choke on the carb.
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 40
From: EXTREME southwest CT
The white/black wire is supposed to go to the choke.
Follow the letter codes from the regulator you have.
'S' is Stator (to the S post of your alternator)
'I' should come from Ignition (switched power)
'A' is correct (should be Alternator output)
'F' is also correct (Field windings)
Hopefully you haven't cooked it yet.
Follow the letter codes from the regulator you have.
'S' is Stator (to the S post of your alternator)
'I' should come from Ignition (switched power)
'A' is correct (should be Alternator output)
'F' is also correct (Field windings)
Hopefully you haven't cooked it yet.
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Junior User
Joined: Aug 2013
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Ok one revision playing with the harness a bit more I noticed I is vacant, A has two wires in it slod yellow and orange and black.also the green is in the S post like I said but goes to a factory plug ghat goes up too the dash. I dont know if that makes a diffrence or not, if not ill go ahead and start cutting
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pedant
Joined: Jan 2008
Posts: 23,576
Likes: 40
From: EXTREME southwest CT
To clarify...
Just forget the colors or order of the terminals on the regulator.
'S' on the regulator should go to 'S' on the alternator.
The electric choke ALSO draws power from the 'S' terminal of the alternator.
Just forget the colors or order of the terminals on the regulator.
'S' on the regulator should go to 'S' on the alternator.
The electric choke ALSO draws power from the 'S' terminal of the alternator.
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 40
From: EXTREME southwest CT
The green wire from your dash needs to go to the 'I' terminal of the regulator.
If your truck has one regulator plug with all four wires going in then you either need to start cutting or get the correct regulator for your truck
If your truck has one regulator plug with all four wires going in then you either need to start cutting or get the correct regulator for your truck
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Junior User
Joined: Aug 2013
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Ok its the stock plug as far as I can tell there are no splices other than ones I did and it says ford (just redoing crap oem splices ), and I compared the new vr with the old one and bottom up they are both IASF. Its an 82 if that matters.
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 40
From: EXTREME southwest CT
..... I don't know how else to explain this after post #7.
The schematic in post #2 is correct.
Green dash wire to I (you will not get anything unless this is connected)
Yellow A to alternator output (along with the orange/black fusible link going to the battery)
Your F (orange /green) seems to be connected correctly to the F of the alternator.
The S from your regulator needs to connect to the Stator of the alternator regardless of the wire color. (plus the choke should draw power too)
If the regulator plug is wired incorrectly just move the pins around in their sockets.
The schematic in post #2 is correct.
Green dash wire to I (you will not get anything unless this is connected)
Yellow A to alternator output (along with the orange/black fusible link going to the battery)
Your F (orange /green) seems to be connected correctly to the F of the alternator.
The S from your regulator needs to connect to the Stator of the alternator regardless of the wire color. (plus the choke should draw power too)
If the regulator plug is wired incorrectly just move the pins around in their sockets.
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Junior User
Joined: Aug 2013
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Ok im trying to check a few yards here in town and see if I can find a plug that is correctly wired some I can just change it out and dont have and ugly mess of mangled wires, thats all im trying too avoid. And I cant pull the pins out the plastic is some brittle I fear ill break it. Its funny stuff never goes back as easy as it came apart.
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 40
From: EXTREME southwest CT
What have you got to lose?
Move green wire to 'I' and put a new wire from 'S' to the alternator Stator.
If the plastic crumbles you needed a new pigtail anyhow.
You can buy these through Pico, Dorman, Motorcraft, Etc...
Move green wire to 'I' and put a new wire from 'S' to the alternator Stator.
If the plastic crumbles you needed a new pigtail anyhow.
You can buy these through Pico, Dorman, Motorcraft, Etc...