All I can find are the 3G install instructions. They are the same with the exception of adding the 4 gauge fused power lead.
Tech note courtesy of 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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