CS130 Alternator wiring question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mocwon · 05-21-2005, 06:30 PM

Has anyone installed a CS130 alternator (later model GM) and if so how did you wire it up? I have no idiot light for the alternator.

neonlarry · 05-21-2005, 09:02 PM

The battery wire should be obvious. The S terminal isthe voltage sensing wire, hook the to the origional buss bar(red wires on DS fender well). The L terminal goes to a switched ignition source THRU A 35-100ohm 3+watt resistor. This circuit needs this resistor to keep from frying the electronics in the Alt.

71meangreenc10 · 05-21-2005, 09:12 PM

So if you have the light do you still need a resistor?

Smitty

mocwon · 05-21-2005, 11:15 PM

Quote:

Originally Posted by neonlarry

The battery wire should be obvious. The S terminal isthe voltage sensing wire, hook the to the origional buss bar(red wires on DS fender well). The L terminal goes to a switched ignition source THRU A 35-100ohm 3+watt resistor. This circuit needs this resistor to keep from frying the electronics in the Alt.

THANKS!!! That's exactly what I needed know.

dmec · 05-22-2005, 10:51 AM

what about if you are using a voltmeter, would that act as the resistor?

neonlarry · 05-21-2005, 09:37 PM

^ no, use the light in place of the resistor.

neonlarry · 05-22-2005, 11:20 AM

^No.

mocwon · 05-22-2005, 06:34 PM

I found a pigtail with the correct resistance in the wire that AC Delco makes for this; part # 8078 and cost $21.88 from Advance Auto parts.

neonlarry · 05-22-2005, 10:11 PM

Thats good to know, a lot of people have had trouble finding a resistor that will work.

chickenwing · 05-23-2005, 11:04 AM

Bought mine from partsamerica. http://www.partsamerica.com/ProductD...artnumber=8078

Nima · 05-23-2005, 03:18 PM

When I switch to internal regulator alt few months ago, I bought 75 ohm 3 watt resistor from a local electronic shop; 50 cents each, Still working well. I just coverd the resistor in some kind of sheild to protect it from heat and possible trauma. I bought 3 of those. if you like I can look for them. I don't promiss to find them though since my place is a mess right now.

chickenwing · 05-23-2005, 08:00 PM

You could definately make a nicer harness than that jumper I listed. This was an easy way to go though. Just plug it in.

krue · 05-23-2005, 10:08 PM

Lotsa good info here. See if we can get it to faq.

dallas71 · 05-24-2005, 09:51 AM

Her is a good web site with alot of good info on it...

http://www.novaresource.org/alternator.htm

05-21-2005, 06:30 PM	#1
mocwon Keep On Truckin' Join Date: Mar 2003 Location: Buda, Texas Posts: 1,354	CS130 Alternator wiring question Has anyone installed a CS130 alternator (later model GM) and if so how did you wire it up? I have no idiot light for the alternator. __________________ Just Passin' Thru Some projects are like herding cats; others are like putting out fires; this one was like herding cats on fire.....

05-21-2005, 09:02 PM	#2
neonlarry Registered User Join Date: Feb 2002 Location: Vacaville, CA Posts: 2,745	The battery wire should be obvious. The S terminal isthe voltage sensing wire, hook the to the origional buss bar(red wires on DS fender well). The L terminal goes to a switched ignition source THRU A 35-100ohm 3+watt resistor. This circuit needs this resistor to keep from frying the electronics in the Alt. __________________ 70 C/10 Light Red 350/TH350, HEI, Duals w/40 series Flows, 91 seat, LED taillights 99 Pontiac S/C GTP, SLP Ram Air hood, GMPP Konis & springs 95 Neon ACR, MP PCM, AFX UDP, 3.0 CAI

05-21-2005, 09:12 PM	#3
71meangreenc10 Its a Truck Thing...... Join Date: Dec 2004 Location: Sierra Vista, Arizona Posts: 3,179	So if you have the light do you still need a resistor? Smitty __________________ 71 C10 283/3SPD Full Resto 71 GMC 1500 Sierra Grande http://67-72chevytrucks.com/vboard/s...d.php?t=518599 70 C10 Suburban Former military GSA truck. 72 Chevy Blazer 4X4, Sloppy Jo, Mountain Climber. Wife says no more trucks. http://67-72chevytrucks.com/vboard/s...d.php?t=707378 72 GMC 1 Ton Motor Home, wife said no more trucks until she saw this one. Gen 3 6.0/4L80E 4.10 http://67-72chevytrucks.com/vboard/s...d.php?t=761110 68 GMC Suburban was 3/4 ton, now 1/2.Wife shook her head 71 C30 Wrecker 71 C20 Scott-Bilt As weird as it gets..BB Cheyenne AC Truck 68 GMC Long Stepside. They keep following me home 69 C30 Former Motor Home, Flat Bed time 70 G20 Red-E-Kamp Conversion "I'm your Boogy Van"

05-21-2005, 09:37 PM	#6
neonlarry Registered User Join Date: Feb 2002 Location: Vacaville, CA Posts: 2,745	^ no, use the light in place of the resistor. __________________ 70 C/10 Light Red 350/TH350, HEI, Duals w/40 series Flows, 91 seat, LED taillights 99 Pontiac S/C GTP, SLP Ram Air hood, GMPP Konis & springs 95 Neon ACR, MP PCM, AFX UDP, 3.0 CAI

05-22-2005, 11:20 AM	#7
neonlarry Registered User Join Date: Feb 2002 Location: Vacaville, CA Posts: 2,745	^No. __________________ 70 C/10 Light Red 350/TH350, HEI, Duals w/40 series Flows, 91 seat, LED taillights 99 Pontiac S/C GTP, SLP Ram Air hood, GMPP Konis & springs 95 Neon ACR, MP PCM, AFX UDP, 3.0 CAI

05-22-2005, 10:51 AM	#5
dmec Senior Member Join Date: Jun 2000 Location: yucaipa ca Posts: 580	what about if you are using a voltmeter, would that act as the resistor?

05-22-2005, 06:34 PM	#8
mocwon Keep On Truckin' Join Date: Mar 2003 Location: Buda, Texas Posts: 1,354	I found a pigtail with the correct resistance in the wire that AC Delco makes for this; part # 8078 and cost $21.88 from Advance Auto parts. __________________ Just Passin' Thru Some projects are like herding cats; others are like putting out fires; this one was like herding cats on fire.....

05-22-2005, 10:11 PM	#9
neonlarry Registered User Join Date: Feb 2002 Location: Vacaville, CA Posts: 2,745	Thats good to know, a lot of people have had trouble finding a resistor that will work. __________________ 70 C/10 Light Red 350/TH350, HEI, Duals w/40 series Flows, 91 seat, LED taillights 99 Pontiac S/C GTP, SLP Ram Air hood, GMPP Konis & springs 95 Neon ACR, MP PCM, AFX UDP, 3.0 CAI

05-23-2005, 11:04 AM	#10
chickenwing Lovin' Life in Miss.! Join Date: Mar 2004 Location: Puckett, Mississippi Posts: 1,937	Bought mine from partsamerica. http://www.partsamerica.com/ProductD...artnumber=8078 __________________ The truck... you hear that? No really, you did hear that?!!! Last edited by chickenwing; 05-23-2005 at 11:07 AM.

05-23-2005, 03:18 PM	#11
Nima Blue 67 Join Date: Apr 2004 Location: Western WA Posts: 1,179	When I switch to internal regulator alt few months ago, I bought 75 ohm 3 watt resistor from a local electronic shop; 50 cents each, Still working well. I just coverd the resistor in some kind of sheild to protect it from heat and possible trauma. I bought 3 of those. if you like I can look for them. I don't promiss to find them though since my place is a mess right now.

05-23-2005, 08:00 PM	#12
chickenwing Lovin' Life in Miss.! Join Date: Mar 2004 Location: Puckett, Mississippi Posts: 1,937	You could definately make a nicer harness than that jumper I listed. This was an easy way to go though. Just plug it in. __________________ The truck... you hear that? No really, you did hear that?!!!

05-23-2005, 10:08 PM	#13
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,448	Lotsa good info here. See if we can get it to faq. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

05-24-2005, 09:51 AM	#14
dallas71 Registered User Join Date: Mar 2004 Location: Corinth,TX Posts: 444	Her is a good web site with alot of good info on it... http://www.novaresource.org/alternator.htm __________________ My 1966 LWB Truck My 1966 SWB Truck

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