anybody know knows a lot about alternators pleaseeee help!

[D347643]

My buddy has an 85 5.0 and his alt went out on him. I have a stock unit from my 86 that i upgraded to a 100 amp (new stator, brushes etc.) that we are gonnna put on his car. His alternator only has posts in the back for the field and ground. My alt has the output post and the place for the d shaped plug with the A S and I pins. His wiring only had two connectors, one is koeo and the other was two wires spliced together...I dont know its for. My question is where do i connect those wires at on the d shaped plug. Also when he borrowed my alt from me he accidently bend the pins in the brush assembly on the back and now it wont even charge on my car. Is there an easy way to see if there is a broken connection in the brush holder/regulator assembly? If anyone can help me with this that would be sooooo awesome..

thanks

Drew

 

[D347643]

anyone?

 

[jrichker]

Not exactly what you asked for, but it should help if you are any good with electrical stuff...

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
__________________