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3G upgrade with external regulator

  • Thread starter Thread starter lxsteed
  • Start date Start date Apr 10, 2004

lxsteed

Founding Member
Aug 12, 2002
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Melbourne
Apr 10, 2004
#1
  • Apr 10, 2004
  • #1
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.
 

lxsteed

Founding Member
Aug 12, 2002
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Melbourne
Apr 10, 2004
#2
  • Apr 10, 2004
  • #2
No one has done this swap on an 85 or 86 stang?
 
L

latroca1

New Member
Apr 30, 2003
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martinsburg,West Virginia
Apr 12, 2004
#3
  • Apr 12, 2004
  • #3
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
 

jrichker

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Mar 10, 2000
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Dublin GA
Apr 12, 2004
#4
  • Apr 12, 2004
  • #4
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
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