green/red wire on regulator plug? - Ford Mustang Forum
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post #1 of 2 (permalink) Old 05-18-2005 Thread Starter
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Joined: Aug 2004
Posts: 14
green/red wire on regulator plug?

I am swapping the old alternator of my 79 coupe. An upgraded 2G will do the job now.

However, two questions concerning wiring. In a 2G wiring diagram I noticed the green/red wire will go to the charge indicator lamp. but my 79 is equipped with an ammeter. So, can I use this wire to connect to the ammeter as well or could it cause any damage to other parts?

Last question concerns the stator plug wire. Can I leave the the original stator plug wire untouched and move the stator plug wire of the alternator plug (white/black) to the S wire of the voltage regulator plug?

Thanks in advance for your advice.


79 5.0 Ghia coupe.....currently restaured

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post #2 of 2 (permalink) Old 05-18-2005
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Location: Saint Louis
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Find a switched source of power through the ignition switch and put a 500 ohm resistor in line between it and the green/red wire and plug it into the 2G. That circuit is waht "turns on" the regulator for the alternator. You could add a light in parrallel with the resistor like the stock circuit and put it in the dash as a charge indicator light.

Tom Moss
88 GT 5spd Vert 3:73s, stock H pipe with Flowmaster dumped, Crower 15511 cam @ 110 ICL, GT40P heads & 1.7 rockers, Jet-Hot coated MAC P headers, Holley SM2 intake, 70mm TB, and still SD with 19# Explorer injectors.
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