Changing to Internal Voltage Regulated Altenator - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Hawker7 · 12-19-2008, 09:50 PM

I'm trying to figure out how to get rid of my external regulator but can't figure out what set up I have now. I have one plug with 2 wires, and one wire that bolts to the back of my alternator currently. This does not seem to be like others have listed when they do their conversion. My truck is a 72. Was anything changed in 72? Also, one write up said you need to connect the idiot light for it to work correctly, but I don’t see where my wire for that is.

**kwmech** · 12-19-2008, 10:13 PM

What alternator are you installing?

1970 chev truck · 12-19-2008, 10:24 PM

there is a thread on here that explains the whole process really well, with pictures and everything. try searching for it, should be able to find it

1970 chev truck · 12-19-2008, 10:27 PM

matter of fact, here it is http://67-72chevytrucks.com/vboard/s...d.php?t=119379

**PICKMUP** · 12-19-2008, 11:45 PM

This kit plugs in, has rubber ends to protect & lock in better and you can go back, if wanted.
Sells for $22 shipped.

**jaros44sr** · 12-19-2008, 11:53 PM

Quote:

Originally Posted by PICKMUP

This kit plugs in, has rubber ends to protect & lock in better and you can go back, if wanted.
Sells for $22 shipped.

I want one

Gray Ghost · 12-20-2008, 12:13 AM

I got an easier fix for you....get an '87 Silverado alternator....90 amps iirc. The you take the outer two wires on the four wire plug that went into the regulator and wire them together. Then you can install the alt with a one wire connection. You jump the hot wire to the second connection on the alternator and your done. I can't get pics right now and I hope I haven't left anything out, but the new alt fits perfectly on the stock arm and lets you run just about anything you want to add without a drain.

My lights used to dim sometimes....not any more!

ERASER5 · 12-20-2008, 01:41 AM

This is a VERY simple switch that is WAY over thought.

1. At the old regulator plug #1 to #3 and #2 to #4. Count in either direction. It is all the same. Make the jumpers from common crimp on spade connectors.

2. Buy a new alt connector for an internal regulator from the "HELP" or the electrical section of you local parts store. The plug will be flat. Take small screw driver and pop the connectors out of the plastic plug. Now pop the old connectors out of the old square type plug, pop the old connectors into the new flat plug.

3. You will have an extra black wire at the alt. This is a ground wire and is not needed. Tape it back out of the way, or cut it off, or you can try to screw it to the new alt body.

4. If the new internal alt does not charge, the wires are reversed in the flat plug.

Cost: about $3. Time: 5 minutes

70GMCer · 12-20-2008, 08:13 AM

ERASER5 nailed it. That's how I did mine.

Hawker7 · 12-20-2008, 09:22 AM

My questions was, I only have 3 wires running to my alternator now. I see most people before the switch have more then that...I'm trying to see if the PO had changed something.

AusTx68 · 12-20-2008, 09:43 AM

I don't know what others have listed but I have the same external regulated wiring as you do. I'll be converting once I get my truck back together.

ERASER5 · 12-22-2008, 01:58 AM

The "extra wire" that is sometimes there is the ground wire. It is not needed now or ever. No worries.

**El Jay** · 12-22-2008, 04:41 AM

I did mine like the link 1970 Chevy Truck posted.

Took maybe 10 minutes, tops.
I bought a flat plug for the alternator @ the local auto supply, cust was under $10.
I works like a charm.

My biggest problem was the external regulator is mounted under the auxiliary battery tray, so access to it was a bit of a mofo.

Gray Ghost · 12-27-2008, 08:02 PM

My fix was free and only took 10 minutes. And I didn't have to leave the house...hard to beat that for simple.

BHRS · 12-28-2008, 12:56 PM

Quote:

Originally Posted by ERASER5

This is a VERY simple switch that is WAY over thought.

1. At the old regulator plug #1 to #3 and #2 to #4. Count in either direction. It is all the same. Make the jumpers from common crimp on spade connectors.

2. Buy a new alt connector for an internal regulator from the "HELP" or the electrical section of you local parts store. The plug will be flat. Take small screw driver and pop the connectors out of the plastic plug. Now pop the old connectors out of the old square type plug, pop the old connectors into the new flat plug.

3. You will have an extra black wire at the alt. This is a ground wire and is not needed. Tape it back out of the way, or cut it off, or you can try to screw it to the new alt body.

4. If the new internal alt does not charge, the wires are reversed in the flat plug.

Cost: about $3. Time: 5 minutes

With this conversion, does the stock amp still work?

Thanks!!!

ERASER5 · 12-28-2008, 09:52 PM

Anything that worked before will still work after, gauge or light.

12-19-2008, 11:45 PM	#5
PICKMUP "Trucks with Class" Join Date: Jul 2000 Location: OLYMPIA, WA, USA Posts: 8,143	Re: Changing to Internal Voltage Regulated Altenator This kit plugs in, has rubber ends to protect & lock in better and you can go back, if wanted. Sells for $22 shipped. Attached Images

12-20-2008, 12:13 AM	#7
Gray Ghost Senior Member Join Date: Sep 2004 Location: Terrell, TX Posts: 1,967	Re: Changing to Internal Voltage Regulated Altenator I got an easier fix for you....get an '87 Silverado alternator....90 amps iirc. The you take the outer two wires on the four wire plug that went into the regulator and wire them together. Then you can install the alt with a one wire connection. You jump the hot wire to the second connection on the alternator and your done. I can't get pics right now and I hope I haven't left anything out, but the new alt fits perfectly on the stock arm and lets you run just about anything you want to add without a drain. My lights used to dim sometimes....not any more! __________________ Kelly '05 GMC Sierra SLE Z71 Bone stock except for new bed rail caps.

12-20-2008, 01:41 AM	#8
ERASER5 Registered User Join Date: Jun 2006 Location: Indiana Posts: 4,859	Re: Changing to Internal Voltage Regulated Altenator This is a VERY simple switch that is WAY over thought. 1. At the old regulator plug #1 to #3 and #2 to #4. Count in either direction. It is all the same. Make the jumpers from common crimp on spade connectors. 2. Buy a new alt connector for an internal regulator from the "HELP" or the electrical section of you local parts store. The plug will be flat. Take small screw driver and pop the connectors out of the plastic plug. Now pop the old connectors out of the old square type plug, pop the old connectors into the new flat plug. 3. You will have an extra black wire at the alt. This is a ground wire and is not needed. Tape it back out of the way, or cut it off, or you can try to screw it to the new alt body. 4. If the new internal alt does not charge, the wires are reversed in the flat plug. Cost: about $3. Time: 5 minutes __________________ '70 GMC C1500 LWB Power disc brakes. WooHoo! Posi 6 Lug Dana 60

12-20-2008, 08:13 AM	#9
70GMCer Senior Member Join Date: Apr 2005 Location: Joppa, Maryland Posts: 4,408	Re: Changing to Internal Voltage Regulated Altenator ERASER5 nailed it. That's how I did mine. __________________ 1997 GMC Sierra Ext 1965 Mustang

12-20-2008, 09:22 AM	#10
Hawker7 Registered User Join Date: Jan 2008 Location: Raleigh, NC Posts: 321	Re: Changing to Internal Voltage Regulated Altenator My questions was, I only have 3 wires running to my alternator now. I see most people before the switch have more then that...I'm trying to see if the PO had changed something.

12-19-2008, 09:50 PM	#1
Hawker7 Registered User Join Date: Jan 2008 Location: Raleigh, NC Posts: 321	Changing to Internal Voltage Regulated Altenator I'm trying to figure out how to get rid of my external regulator but can't figure out what set up I have now. I have one plug with 2 wires, and one wire that bolts to the back of my alternator currently. This does not seem to be like others have listed when they do their conversion. My truck is a 72. Was anything changed in 72? Also, one write up said you need to connect the idiot light for it to work correctly, but I don’t see where my wire for that is. Attached Images

12-19-2008, 10:13 PM	#2
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,598	Re: Changing to Internal Voltage Regulated Altenator What alternator are you installing?

12-19-2008, 10:24 PM	#3
1970 chev truck Weldin' it up Join Date: Mar 2007 Location: Ironwood, Michigan Posts: 803	Re: Changing to Internal Voltage Regulated Altenator there is a thread on here that explains the whole process really well, with pictures and everything. try searching for it, should be able to find it __________________ -Paul- RIP El Jay Dirt is for Racing, Asphalt is for Getting There If need be, send me an e-mail at cbm_racing_90@hotmail.com 1970 Custom/10 LWB 4X4 350/TH350 2003 Silverado 1500 Ext. cab 1974 Kawasaki 175 F7 Enduro 2002 Polaris Edge X 700

12-19-2008, 10:27 PM	#4
1970 chev truck Weldin' it up Join Date: Mar 2007 Location: Ironwood, Michigan Posts: 803	Re: Changing to Internal Voltage Regulated Altenator matter of fact, here it is http://67-72chevytrucks.com/vboard/s...d.php?t=119379 __________________ -Paul- RIP El Jay Dirt is for Racing, Asphalt is for Getting There If need be, send me an e-mail at cbm_racing_90@hotmail.com 1970 Custom/10 LWB 4X4 350/TH350 2003 Silverado 1500 Ext. cab 1974 Kawasaki 175 F7 Enduro 2002 Polaris Edge X 700 Last edited by 1970 chev truck; 12-19-2008 at 10:27 PM.

12-20-2008, 09:43 AM	#11
AusTx68 Registered User Join Date: Nov 2008 Location: Italy Posts: 1,278	Re: Changing to Internal Voltage Regulated Altenator I don't know what others have listed but I have the same external regulated wiring as you do. I'll be converting once I get my truck back together. __________________ '68 C-10 SWB 383 Stroker (Sold 3/2/2013) '87 R2500 LWB 454 TBI converted to Carb Last edited by AusTx68; 12-20-2008 at 09:44 AM.

12-22-2008, 01:58 AM	#12
ERASER5 Registered User Join Date: Jun 2006 Location: Indiana Posts: 4,859	Re: Changing to Internal Voltage Regulated Altenator The "extra wire" that is sometimes there is the ground wire. It is not needed now or ever. No worries. __________________ '70 GMC C1500 LWB Power disc brakes. WooHoo! Posi 6 Lug Dana 60

12-22-2008, 04:41 AM	#13
El Jay Gone to greener pastures Join Date: May 2007 Location: Gateway to the Delta Posts: 7,354	Re: Changing to Internal Voltage Regulated Altenator I did mine like the link 1970 Chevy Truck posted. Took maybe 10 minutes, tops. I bought a flat plug for the alternator @ the local auto supply, cust was under $10. I works like a charm. My biggest problem was the external regulator is mounted under the auxiliary battery tray, so access to it was a bit of a mofo. __________________ '69 Chevy 1/2 T LWB Stepper: Daily Beater '72 GMC 3/4 T Fleet: Another Daily Beater '72 Plymouth Gran Coupe: ? "Ah women. They make the highs higher and the lows more frequent." Friedrich Nietzsche "Never kick a fresh turd on a hot day." Harry S. Truman GUN CONTROL: Never having to say, "I missed you." Always fire two warning shots into your attacker's chest area before putting a bullet between his eyes. Paraphrased from Louis Awerbuck

12-27-2008, 08:02 PM	#14
Gray Ghost Senior Member Join Date: Sep 2004 Location: Terrell, TX Posts: 1,967	Re: Changing to Internal Voltage Regulated Altenator My fix was free and only took 10 minutes. And I didn't have to leave the house...hard to beat that for simple. __________________ Kelly '05 GMC Sierra SLE Z71 Bone stock except for new bed rail caps.

12-28-2008, 09:52 PM	#16
ERASER5 Registered User Join Date: Jun 2006 Location: Indiana Posts: 4,859	Re: Changing to Internal Voltage Regulated Altenator Anything that worked before will still work after, gauge or light. __________________ '70 GMC C1500 LWB Power disc brakes. WooHoo! Posi 6 Lug Dana 60

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