alternator ??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

gmc71 · 12-17-2003, 12:36 AM

The trucks alternator is wired for a square plug in the back, I have a few newer ones laying arround (rectangle, or flat on top) what do I need to do to convert? Is it worth it? Are there any advantages to the newer models?

Also.... in the alternator wiring harnes section there is a light blue wire, where does it go? what is is for?

Thanks in advance

JimKshortstep4x4 · 12-17-2003, 11:18 AM

Going with an internally regulated alternator is a good upgrade. (Alternator with the rectangular plug). Square plug is the older style with the external regulator.

I believe the blue wire you are asking about is the exciter wire from the ignition. It should read voltage with the key on.

Here is a link to discussion on upgrading to an internally regulated alternator.

Jim

http://67-72chevytrucks.com/vboard/s...tor+and+change

*rickspickuppart* · 12-17-2003, 12:03 PM

for 15.00 you can get the conversion kit and not have to cut or modify anything and it eliminates having to modify any wiring at the regulator side.

Shawn

ZOOMY · 12-17-2003, 10:31 PM

barn9 sold me a couple kits about a month ago. He might still have some.

*rickspickuppart* · 12-17-2003, 10:45 PM

If not I have some

Shawn

dinnut · 12-17-2003, 11:13 PM

is this interally or externally regulated?

gmc71 · 12-17-2003, 11:19 PM

Thanks, I'll look into that

12-17-2003, 12:36 AM	#1
gmc71 Registered User Join Date: Aug 2003 Location: Buffalo, NY Posts: 115	alternator ??? The trucks alternator is wired for a square plug in the back, I have a few newer ones laying arround (rectangle, or flat on top) what do I need to do to convert? Is it worth it? Are there any advantages to the newer models? Also.... in the alternator wiring harnes section there is a light blue wire, where does it go? what is is for? Thanks in advance

12-17-2003, 10:31 PM	#4
ZOOMY Senior Member Join Date: Feb 2003 Location: WIS Posts: 1,752	barn9 barn9 sold me a couple kits about a month ago. He might still have some.

12-17-2003, 11:13 PM	#6
dinnut Registered User Join Date: Apr 2003 Location: missouri city, tx Posts: 4,486	is this interally or externally regulated? Attached Images __________________ 70 longbed 496/th400/Ford 9"

12-17-2003, 11:19 PM	#7
gmc71 Registered User Join Date: Aug 2003 Location: Buffalo, NY Posts: 115	Thanks, I'll look into that __________________ 72 Chevy 4x4 350 55 Chevy Bel Air 350/350 53 Matchless G80s (motorcycle) 06 Trailblazer SS 400hp LS2

12-17-2003, 11:18 AM	#2
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Going with an internally regulated alternator is a good upgrade. (Alternator with the rectangular plug). Square plug is the older style with the external regulator. I believe the blue wire you are asking about is the exciter wire from the ignition. It should read voltage with the key on. Here is a link to discussion on upgrading to an internally regulated alternator. Jim http://67-72chevytrucks.com/vboard/s...tor+and+change

12-17-2003, 12:03 PM	#3
rickspickuppart Account Suspended Join Date: Jul 2003 Posts: 1,284	for 15.00 you can get the conversion kit and not have to cut or modify anything and it eliminates having to modify any wiring at the regulator side. Shawn

12-17-2003, 10:45 PM	#5
rickspickuppart Account Suspended Join Date: Jul 2003 Posts: 1,284	If not I have some Shawn



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