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

Andy4639 · 02-15-2006, 10:46 PM

What would happen to a alternator or that matter the wiring if you ran the jumper wire from the big post on the back to the wrong little side connector on a internal regulated alternator? The one where you take the 2 wires at the old external regulater and connect them together and run it to the alternator. I just wondering out loud, because I took mine loose tonight and don't remember which way it was to begin with. I hooked it up the way I think it should be but just want some more insurance that it's right. Thanks guy's

68haywagon · 02-15-2006, 10:52 PM

http://67-72chevytrucks.com/vboard/s...d.php?t=119379

This is the FAQ section for the conversion. You can see the connections there. Good Luck!!

Mike

Andy4639 · 02-15-2006, 10:59 PM

Thanks 68Haywagon,I knew it was on here but couldn't find it when I needed it. Thanks. OK I have checked mine and yes it was backwards but I never drove it thank goodness, but what would it do if I had of? I turned it right now.

68haywagon · 02-15-2006, 11:20 PM

Not a problem...glad you caught it. I don't know what would have happened though

Mike

Andy4639 · 02-16-2006, 08:12 PM

Anybody got a answer for me? I'm curoius to what would it do. Would it hurt anything are drain the battery?

**VetteVet** · 02-17-2006, 01:11 AM

I was curious about this question also but I thought that since the terminal you hooked backwards was the one the idiot light operates from, it would be positive and no harm would be done, however the alternator would not work since the other terminal is the field energizing terminal and excites the alternator to provide output. I was able to locate this explanation in mad electrics website with a picture of the regulator.

Pasted from the website.

The voltage regulator in the photo below is used with the Delco 10SI and 12SI alternators. Notice that the voltage regulator above has two flat blade male terminals (see arrows). There is actually a third terminal of this voltage regulator, which is the ground at one of the three mounting screws. One of the two flat blade terminals is wired to an ignition switched ON/OFF source, and this circuit can also be used to operate a dash mounted warning light (The warning light is an option, not a requirement).

The other of the two voltage regulator terminals is the voltage-sensing terminal, and through this terminal the voltage regulator will monitor electrical system voltage and make adjustments to the alternator output in effort to keep system voltage at about 14.2 volts.

MDC · 02-17-2006, 01:35 AM

VetteVet's right. The other terminal operates the 'generator' light on dashes with idiot lights. If you follow the wiring diagram and the dash connector pin out for gauges, that wire (brown) is unused even though the tutorial says to connect the two together. The amp gauge uses the black and black/white wires in position 1 and 12 on the connector. But had you started it the regulator just wouldn't have worked

Andy4639 · 02-17-2006, 09:40 AM

I called mad electrics and talked with him, very nice man and very smart on electric stuff. He said it would charge but not enough to operate the truck with everything running. It would also drain the battery when the truck is off. The main thing is I'm OK and nothing's hurt. Thanks Guy's.
I will be buying his upgrade soon I hope for these trucks.

riden2low · 02-17-2006, 01:37 PM

Quote:

Originally Posted by Andy4639

I called mad electrics and talked with him, very nice man and very smart on electric stuff. He said it would charge but not enough to operate the truck with everything running. It would also drain the battery when the truck is off. The main thing is I'm OK and nothing's hurt. Thanks Guy's.
I will be buying his upgrade soon I hope for these trucks.

Your man is correct. I had my alternator off and I did the same thing as you had done. It drove me crazy. The battery would drain over a few days. As long as you drove it every day it was ok. But after it sat for a day or two, I was out there with jumper cables. Now that went on for months until I got help from the board here and did I feel stupid when I saw what I had done. Now no problems at all.

**VetteVet** · 02-17-2006, 02:45 PM

I missed the part about leaving the wire on the wrong terminal because I was focusing on damage to the alternator or shorting the wiring. The large red wire is connected to battery voltage and is hot all the time as you know so having it jumpered to the terminal would create a draw and battery drain. I'm glad Andy4639 called the mad website and posted here.
Did you read all of the info on Mad's site about remote sensing and one wire alternators? I was going to get one until I started checking into them.

Andy4639 · 02-17-2006, 03:01 PM

I talked with him for about a hr. and I would like to get the head light relay setup, but I think now I can make my own from relay's at Radio shack. I have burnt up one H/L switch since I added the tri-bar lights. I think it would be better.
As far as a one wire Alternator, No I wouldn't have it. The system we have in these trucks works pretty good if the wires are in good shape. I'll stick with what I got for now.

Rdrdave · 02-17-2006, 03:07 PM

Same thing happened to me...It was a brain twister. Fixed and all it did was make my electricity bill go up...from charging the battery every other day!

**VetteVet** · 02-17-2006, 03:16 PM

Quote:

Originally Posted by Andy4639

I talked with him for about a hr. and I would like to get the head light relay setup, but I think now I can make my own from relay's at Radio shack. I have burnt up one H/L switch since I added the tri-bar lights. I think it would be better.
As far as a one wire Alternator, No I wouldn't have it. The system we have in these trucks works pretty good if the wires are in good shape. I'll stick with what I got for now.

Andy here is Tx Firefighters FAQ about the headlight relay. It may help you some.
http://67-72chevytrucks.com/vboard/s...d.php?t=188478

02-15-2006, 10:46 PM	#1
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	New alternator What would happen to a alternator or that matter the wiring if you ran the jumper wire from the big post on the back to the wrong little side connector on a internal regulated alternator? The one where you take the 2 wires at the old external regulater and connect them together and run it to the alternator. I just wondering out loud, because I took mine loose tonight and don't remember which way it was to begin with. I hooked it up the way I think it should be but just want some more insurance that it's right. Thanks guy's __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

02-15-2006, 10:52 PM	#2
68haywagon I'm watching you! Join Date: Feb 2005 Location: Levittown, PA Posts: 1,822	Re: New alternator http://67-72chevytrucks.com/vboard/s...d.php?t=119379 This is the FAQ section for the conversion. You can see the connections there. Good Luck!! Mike __________________ 2012 Chevrolet Silverado 1500 Z71 4WD 1993 Chevrolet C-1500 W/T - Blue - 4.3L V-6, 4 speed auto - Dad's (RIP) 1992 Chevrolet S10 - LS swap project 1968 Chevrolet C-10 longbed fleetside - sold

02-15-2006, 10:59 PM	#3
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: New alternator Thanks 68Haywagon,I knew it was on here but couldn't find it when I needed it. Thanks. OK I have checked mine and yes it was backwards but I never drove it thank goodness, but what would it do if I had of? I turned it right now. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

02-15-2006, 11:20 PM	#4
68haywagon I'm watching you! Join Date: Feb 2005 Location: Levittown, PA Posts: 1,822	Re: New alternator Not a problem...glad you caught it. I don't know what would have happened though Mike __________________ 2012 Chevrolet Silverado 1500 Z71 4WD 1993 Chevrolet C-1500 W/T - Blue - 4.3L V-6, 4 speed auto - Dad's (RIP) 1992 Chevrolet S10 - LS swap project 1968 Chevrolet C-10 longbed fleetside - sold

02-16-2006, 08:12 PM	#5
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: New alternator Anybody got a answer for me? I'm curoius to what would it do. Would it hurt anything are drain the battery? __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

02-17-2006, 01:11 AM	#6
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,718	Re: New alternator I was curious about this question also but I thought that since the terminal you hooked backwards was the one the idiot light operates from, it would be positive and no harm would be done, however the alternator would not work since the other terminal is the field energizing terminal and excites the alternator to provide output. I was able to locate this explanation in mad electrics website with a picture of the regulator. Pasted from the website. The voltage regulator in the photo below is used with the Delco 10SI and 12SI alternators. Notice that the voltage regulator above has two flat blade male terminals (see arrows). There is actually a third terminal of this voltage regulator, which is the ground at one of the three mounting screws. One of the two flat blade terminals is wired to an ignition switched ON/OFF source, and this circuit can also be used to operate a dash mounted warning light (The warning light is an option, not a requirement). The other of the two voltage regulator terminals is the voltage-sensing terminal, and through this terminal the voltage regulator will monitor electrical system voltage and make adjustments to the alternator output in effort to keep system voltage at about 14.2 volts. Attached Images __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. Last edited by VetteVet; 02-17-2006 at 01:12 AM.

02-17-2006, 01:35 AM	#7
MDC Registered User Join Date: Oct 2005 Location: N Texas Posts: 727	Re: New alternator VetteVet's right. The other terminal operates the 'generator' light on dashes with idiot lights. If you follow the wiring diagram and the dash connector pin out for gauges, that wire (brown) is unused even though the tutorial says to connect the two together. The amp gauge uses the black and black/white wires in position 1 and 12 on the connector. But had you started it the regulator just wouldn't have worked __________________ 67 C10 Shortbed 327 05 F150 4x4 NO APPOLOGIES 's 02 Xpress X19 02 Yamaha VMax 150 www.xpressboats.com Nothing says 'poor craftmanship' like wrinkles in your duct tape

02-17-2006, 09:40 AM	#8
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: New alternator I called mad electrics and talked with him, very nice man and very smart on electric stuff. He said it would charge but not enough to operate the truck with everything running. It would also drain the battery when the truck is off. The main thing is I'm OK and nothing's hurt. Thanks Guy's. I will be buying his upgrade soon I hope for these trucks. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

02-17-2006, 02:45 PM	#10
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,718	Re: New alternator I missed the part about leaving the wire on the wrong terminal because I was focusing on damage to the alternator or shorting the wiring. The large red wire is connected to battery voltage and is hot all the time as you know so having it jumpered to the terminal would create a draw and battery drain. I'm glad Andy4639 called the mad website and posted here. Did you read all of the info on Mad's site about remote sensing and one wire alternators? I was going to get one until I started checking into them. __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative.

02-17-2006, 03:01 PM	#11
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: New alternator I talked with him for about a hr. and I would like to get the head light relay setup, but I think now I can make my own from relay's at Radio shack. I have burnt up one H/L switch since I added the tri-bar lights. I think it would be better. As far as a one wire Alternator, No I wouldn't have it. The system we have in these trucks works pretty good if the wires are in good shape. I'll stick with what I got for now. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

02-17-2006, 03:07 PM	#12
Rdrdave Broke and still trying Join Date: Apr 2003 Location: Alameda, CA Posts: 562	Re: New alternator Same thing happened to me...It was a brain twister. Fixed and all it did was make my electricity bill go up...from charging the battery every other day!



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