My '90 coupe has the police package. The 130 amp alternator had an external regulator. My question is, how do I wire up my new alternator from PA Performance? Which wires do I use for the "A" and "I" on the new plug? I think its a similar setup to the 85-86 stangs that had external regulators.
3G upgrade with external regulator
- Thread starter lxsteed
- Start date
Here is a post i found!!!! I plan on doing this swap as soon as i find one cheap!!! I have a 84 svo.
Yes!!!! It's been done...
http://forums.stangnet.com/showthread.php?t=450131&highlight=alternator
Yes!!!! It's been done...
http://forums.stangnet.com/showthread.php?t=450131&highlight=alternator
From SwAmPf0x:
how to wire a 3G in an 85 or earlier Mustang
cut and paste from an old post of mine...
There are 4 wires to the voltage regulator, cut the plug off the regulator, extend the 2 wires used to the alt and cap off the other 2
The F will not be used.
The I will not be used.
The S will go to the 3G
The A will go to the 3G
wiring on the 3g side
The Big post on the back goes to the solenoid, same side as the battery, a fuse is recommended on this wire, also up the wire size to 4ga minimum
Now for the 3 wire plug...wires A,S,I
A goes to A from the old external regulator
S goes to the stator connector on the 3G
I goes to S from the old external regulator
__________________
how to wire a 3G in an 85 or earlier Mustang
cut and paste from an old post of mine...
There are 4 wires to the voltage regulator, cut the plug off the regulator, extend the 2 wires used to the alt and cap off the other 2
The F will not be used.
The I will not be used.
The S will go to the 3G
The A will go to the 3G
wiring on the 3g side
The Big post on the back goes to the solenoid, same side as the battery, a fuse is recommended on this wire, also up the wire size to 4ga minimum
Now for the 3 wire plug...wires A,S,I
A goes to A from the old external regulator
S goes to the stator connector on the 3G
I goes to S from the old external regulator
__________________
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