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Alternator Adapter/Wiring Help wanted...

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Old Apr 25, 2014 | 02:47 PM
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Default Alternator Adapter/Wiring Help wanted...

Sure the adapter I need is back in my boxes back in Germany, but don't have it here in Vegas... What type of an adapter do I need for this 105 amp alternator???



Is this adapter something I can get at Autozone/Napa??? Does this need to be plugged in for the alternator to charge the battery??? When I did a search, found the adapter for the CS130 style alternator, but don't think that is mine...

Also, there was some black goop on the new front harness... Is this normal??? The engine compartment harness did not have this goop on the wires...





Thanks much...

Rogman
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Old Apr 25, 2014 | 03:54 PM
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dbelectronics.com or do a search for Durangoboy. He had a few write ups on conversions.
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Old Apr 25, 2014 | 04:10 PM
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The back goop is sealant. It keeps moisture out of the harness connector. Add more to it when you plug it up and tighten the bolt.
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Old Apr 25, 2014 | 04:12 PM
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Originally Posted by hugie82
dbelectronics.com or do a search for Durangoboy. He had a few write ups on conversions.
Thanks much... I did read some of those old write-ups and most were tailored to a CS130/CS144 alternator which I don't think I have...

I just got off the phone with March Performance (where I got the alternator) and tech support said I only need the hot wire and a ground from the case to the engine... Something tells me I still need something in this plug, but will give it a shot...

Rogman
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Old Apr 25, 2014 | 07:11 PM
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The picture of your alternator looks like the cs 130-140. The adapter is available to go from that to your stock wiring, for a 73 you will need the adapter with the resister built in.
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Old Apr 25, 2014 | 07:50 PM
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Originally Posted by '75
The picture of your alternator looks like the cs 130-140. The adapter is available to go from that to your stock wiring, for a 73 you will need the adapter with the resister built in.
Sure looks like a CS130 to me (base on the limited view of the pic).

The 144 is physically larger (than the SI10-12's, not much but enough that stock brackets need to be adjusted though)

BTW. Some of the converted wires resistor wires sold through NAPA (and a few vette venders) are missing the resistor. Apparently a large amount were miss-boxed and out there. I've got two....
M

Last edited by Mooser; Apr 25, 2014 at 07:53 PM.
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Old Apr 25, 2014 | 07:56 PM
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Adapter (with resistor) PN W1204


Adapter (without resistor) PN W1201


Cars with dash warning lights (charge, batt etc) do not need the resistor, cars without them need the resistor
M

Last edited by Mooser; Apr 25, 2014 at 07:59 PM.
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Old Apr 25, 2014 | 07:58 PM
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Originally Posted by '75
The picture of your alternator looks like the cs 130-140. The adapter is available to go from that to your stock wiring, for a 73 you will need the adapter with the resister built in.
Originally Posted by Mooser
Sure looks like a CS130 to me (base on the limited view of the pic).

The 144 is physically larger (than the SI10-12's, not much but enough that stock brackets need to be adjusted though)

BTW. Some of the converted wires resistor wires sold through NAPA (and a few vette venders) are missing the resistor. Apparently a large amount were miss-boxed and out there. I've got two....
M
Thanks guys... What are the "Cons" for not hooking this up before I ship the vehicle to Germany?? In other words, what capability does the car lose without this plug???

Found an adapter w/resistor on Ebay for $15, just can't get it here before the car is picked up...

Rogman
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Old Apr 25, 2014 | 08:13 PM
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Originally Posted by rogman16
Thanks guys... What are the "Cons" for not hooking this up before I ship the vehicle to Germany?? In other words, what capability does the car lose without this plug???

Found an adapter w/resistor on Ebay for $15, just can't get it here before the car is picked up...

Rogman
One of the two wires in the plug (we don't use all the pins) should be what actually trips the alternator into "charging" so I don't see how it would even work without it. That said, there have been some recent(ish) trends towards single wire alternators (130 and 144's) so maybe March did that (I have my doubts)
M
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Old Apr 25, 2014 | 08:18 PM
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Originally Posted by Mooser
One of the two wires in the plug (we don't use all the pins) should be what actually trips the alternator into "charging" so I don't see how it would even work without it. That said, there have been some recent(ish) trends towards single wire alternators (130 and 144's) so maybe March did that (I have my doubts)
M
Thanks Brett... The tech at March was pretty emphatic that it was a single wire alternator and just to tape my old connector back into the wiring harness... As long as it charges properly, I am good with that for now...

Rogman
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Old Apr 25, 2014 | 08:21 PM
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Originally Posted by rogman16
Thanks Brett... The tech at March was pretty emphatic that it was a single wire alternator and just to tape my old connector back into the wiring harness... As long as it charges properly, I am good with that for now...

Rogman
Then your probably set
Worse comes to worse it simply won't energize and start to charge, no harm, no foul.
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Old Apr 25, 2014 | 09:40 PM
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Default you can get a 12si to cs adapter at NAPA....see within

go to the thread below and read post 27..... it should work for your CS alternator after you measure your ckt....I got my adapter at NAPA after taking the reading and it worked right and made everything easy.....and it will let me install a 12si if I can't find a CS-144 ....but they're both real common nowadays.

http://forums.corvetteforum.com/c3-t...version-2.html


UPDATE:
I just read through again and noticed that you say it is not a CS alternator.....so nevermind .....

Last edited by carriljc; Apr 25, 2014 at 09:44 PM. Reason: to add UPDATE
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Old Apr 26, 2014 | 07:00 AM
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I just installed a Powermaster CS130, 105 amp alternator with a plug similar to the PN W1201 on a 78 which has a "gen" light.
This is the plug adapter; http://www.summitracing.com/parts/pwm-140/overview/

That alternator in your picture looks like a CS130 and March uses them on many of their kits.
Would like to know your year, engine and March kit, how does it fit.
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Old Apr 26, 2014 | 08:52 AM
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Originally Posted by carriljc
go to the thread below and read post 27..... it should work for your CS alternator after you measure your ckt....I got my adapter at NAPA after taking the reading and it worked right and made everything easy.....and it will let me install a 12si if I can't find a CS-144 ....but they're both real common nowadays.

http://forums.corvetteforum.com/c3-t...version-2.html


UPDATE:
I just read through again and noticed that you say it is not a CS alternator.....so nevermind .....
I don't know what type of an alternator it is... Could be a CS, may not be... All the March tech said is that it was a 1-wire alternator..

Originally Posted by mikep3
I just installed a Powermaster CS130, 105 amp alternator with a plug similar to the PN W1201 on a 78 which has a "gen" light.
This is the plug adapter; http://www.summitracing.com/parts/pwm-140/overview/

That alternator in your picture looks like a CS130 and March uses them on many of their kits.
Would like to know your year, engine and March kit, how does it fit.
Thanks Mike... I have the March Corvette Revolver kit... Fits great... If I were to redesign the kit, I would add tensioning pulleys and an option for a power steering tank on the Type II pump... Happy with the look, fit and functionality of the kit, so far...



Rogman
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Old Apr 26, 2014 | 05:07 PM
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Great picture, keep use updated. I was thinking of the March Sport Track unit when I upgrade my AC.
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Old Apr 26, 2014 | 06:20 PM
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Okay experts, car is back to running condition again... Now that the alternator is hooked up, what's the easiest way for me to check to see if it is charging/working??

Can I use a voltmeter at the battery???

Thanks in advance for any help you can lend me...

Rogman
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Old Apr 26, 2014 | 07:08 PM
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i checked by using a digital vom, right at the output stud+ on the back and to case- ground. should be about 14v running......
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Old Apr 26, 2014 | 07:21 PM
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Yepper, just did the test at the battery... 12.5v engine off, 14.5v with engine running... This is telling me the battery is getting charged, correct???

Rogman
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Old Apr 26, 2014 | 07:43 PM
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Originally Posted by rogman16
Yepper, just did the test at the battery... 12.5v engine off, 14.5v with engine running... This is telling me the battery is getting charged, correct???

Rogman
Yes, and best is if it does it at idle with HVAC running full blast...


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Old Apr 27, 2014 | 12:19 AM
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Originally Posted by mrvette
Yes, and best is if it does it at idle with HVAC running full blast...


Thanks!!! It was at idle, but several more months before I have the AC installed!!!

Rogman
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