AAW/external regulated alternator - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**VetteVet** · 01-07-2018, 04:35 PM

First of all I agree with Richard.
Your picture is of an externally regulated alternator and it will not work the way you have it wired, in fact it will probably burn up or kill the battery. If you want to use it you will have to rewire the harness and add an external regulator.

The AAW harness has a brown wire which is the alternator exciter wire for the alternator and in the original harness it is wired to the external voltage regulator
and in the conversion it has to be wired directly to the SI internally regulator alternator. If you were converting the stock harness then you could jump the EVR plug and change the alternator plug or you could just run thye brown wire from the EVR directly to the internally regulated alternator as in Richards diagram.

That being said, you would be much better off going to the SI alternator or even to a CS style. Your voltage and current output will be much better and you can run your future additional accessories without converting later. perhaps you can return the alternator and exchange it for an internal regulated one or you can probably sell it to another 67 /72 truck owner.

If you convert you should use a main junction and not the starter solenoid, along with some fusible links in the alternator and battery power wires. If you have the gauge style dash your ammeter probably will not work with the AAW circuit.

Study this thread and you will have all the information you need.

http://67-72chevytrucks.com/vboard/s...d.php?t=417872

stevenfromtexas · 01-09-2018, 11:30 AM

thank you vette!!

headed to get an SI alternator now. thank all of you guys for the info!!!!

as far as my ammeter prolly not working, what is the best way to let me know if my alternator is not charging once i get this thing running.

Andy4639 · 01-09-2018, 01:13 PM

Quote:

Originally Posted by stevenfromtexas

as far as my ammeter prolly not working, what is the best way to let me know if my alternator is not charging once i get this thing running.

Buy a volt meter gauge and hook it up to any good 12 volt source in the cab and ground it.
Also member twofakind make a coversion to place in the stock opening also.

http://67-72chevytrucks.com/vboard/s...d.php?t=653967

stevenfromtexas · 01-09-2018, 01:48 PM

thank you brother!!!

01-07-2018, 04:35 PM	#1
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,723	Re: AAW/external regulated alternator First of all I agree with Richard. Your picture is of an externally regulated alternator and it will not work the way you have it wired, in fact it will probably burn up or kill the battery. If you want to use it you will have to rewire the harness and add an external regulator. The AAW harness has a brown wire which is the alternator exciter wire for the alternator and in the original harness it is wired to the external voltage regulator and in the conversion it has to be wired directly to the SI internally regulator alternator. If you were converting the stock harness then you could jump the EVR plug and change the alternator plug or you could just run thye brown wire from the EVR directly to the internally regulated alternator as in Richards diagram. That being said, you would be much better off going to the SI alternator or even to a CS style. Your voltage and current output will be much better and you can run your future additional accessories without converting later. perhaps you can return the alternator and exchange it for an internal regulated one or you can probably sell it to another 67 /72 truck owner. If you convert you should use a main junction and not the starter solenoid, along with some fusible links in the alternator and battery power wires. If you have the gauge style dash your ammeter probably will not work with the AAW circuit. Study this thread and you will have all the information you need. http://67-72chevytrucks.com/vboard/s...d.php?t=417872 __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative.

01-09-2018, 11:30 AM	#2
stevenfromtexas Registered User Join Date: Mar 2013 Location: Hewitt, Texas Posts: 444	Re: AAW/external regulated alternator thank you vette!! headed to get an SI alternator now. thank all of you guys for the info!!!! as far as my ammeter prolly not working, what is the best way to let me know if my alternator is not charging once i get this thing running. Attached Images __________________ Steven '67 SWB, 250ci, 3OTT.......this is my first build...... I wonder if my grand kids will say, "I would give anything to have my grand dads 2005 Chevrolet Z71"

01-09-2018, 01:48 PM	#4
stevenfromtexas Registered User Join Date: Mar 2013 Location: Hewitt, Texas Posts: 444	Re: AAW/external regulated alternator thank you brother!!! __________________ Steven '67 SWB, 250ci, 3OTT.......this is my first build...... I wonder if my grand kids will say, "I would give anything to have my grand dads 2005 Chevrolet Z71"



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