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

72gmcshorty · 11-03-2002, 02:57 PM

Instead of keeping the plug that goes into the external regulator, can i just cut it off and splice the wires together? White to brown and red to blue. After doing this I have only three wires that go to my alternator now. A blue and white that i plug into the alternator and a red that plugs into the back of it. Is this correct?

Longhorn Man · 11-03-2002, 03:14 PM

A ground would be a good idea too.
I deleted the plug in the harness that is going into the Longhorn. If you unwrap your harness, you'll see that there is alot of wire that you can remove and throw away if you want to delete the plug.

72gmcshorty · 11-03-2002, 03:23 PM

ground to where? Does it have to run in the wirning harness?

Longhorn Man · 11-03-2002, 03:29 PM

My GMC has a ground in the harness, I am unsure of the Longhorn...been a while since I have even seen that harness. It's in a box somewhere since the move.
You could just ground the case of the alt to the engine block. Just remember that bad gropunds are the #1 electrical problem on old vehicles.

72gmcshorty · 11-03-2002, 03:31 PM

would a poor ground not send any power to the starter when i turn the key on?

Longhorn Man · 11-03-2002, 07:51 PM

Not on the charging circuit...only if your bad ground is on the battery terminal or the other end of that battery cable.

firstgencamaros · 11-03-2002, 08:45 PM

http://www.chevelles.com/techref/ftecref14.html
Try this link. It should have the info your looking for. It is what I used when I went to a internal regulator on my 69 Camaro.
Good luck.

Longhorn Man · 11-03-2002, 11:30 PM

But it is so much easier to hook up the alt the same way as it was (with the new pig tail spliced/soldered in) and then jump the wires on the regulater plug like this...

11-03-2002, 03:23 PM	#3
72gmcshorty Registered User Join Date: Jul 2001 Location: North Delta, British Columbia Posts: 1,344	ground to where? Does it have to run in the wirning harness? __________________ 1992 Gmc 2wd 1972 Chevy Blazer 2wd

11-03-2002, 03:31 PM	#5
72gmcshorty Registered User Join Date: Jul 2001 Location: North Delta, British Columbia Posts: 1,344	would a poor ground not send any power to the starter when i turn the key on? __________________ 1992 Gmc 2wd 1972 Chevy Blazer 2wd

11-03-2002, 08:45 PM	#7
firstgencamaros Registered User Join Date: Sep 2002 Location: Gilbert, AZ Posts: 151	http://www.chevelles.com/techref/ftecref14.html Try this link. It should have the info your looking for. It is what I used when I went to a internal regulator on my 69 Camaro. Good luck. __________________ FGC

11-03-2002, 11:30 PM	#8
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	But it is so much easier to hook up the alt the same way as it was (with the new pig tail spliced/soldered in) and then jump the wires on the regulater plug like this... Attached Images

11-03-2002, 02:57 PM	#1
72gmcshorty Registered User Join Date: Jul 2001 Location: North Delta, British Columbia Posts: 1,344	Alternator conversion ??? Instead of keeping the plug that goes into the external regulator, can i just cut it off and splice the wires together? White to brown and red to blue. After doing this I have only three wires that go to my alternator now. A blue and white that i plug into the alternator and a red that plugs into the back of it. Is this correct? __________________ 1992 Gmc 2wd 1972 Chevy Blazer 2wd

11-03-2002, 03:14 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	A ground would be a good idea too. I deleted the plug in the harness that is going into the Longhorn. If you unwrap your harness, you'll see that there is alot of wire that you can remove and throw away if you want to delete the plug.

11-03-2002, 03:29 PM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	My GMC has a ground in the harness, I am unsure of the Longhorn...been a while since I have even seen that harness. It's in a box somewhere since the move. You could just ground the case of the alt to the engine block. Just remember that bad gropunds are the #1 electrical problem on old vehicles.

11-03-2002, 07:51 PM	#6
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Not on the charging circuit...only if your bad ground is on the battery terminal or the other end of that battery cable.



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