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Take a look at this alternator..

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Old 03-25-2008, 03:48 PM
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Default Take a look at this alternator..

And tell me what goes in here, and where it goes from there! I cant figure this one out.



Thanks
Old 03-25-2008, 03:52 PM
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There is a plug that only has 1 wire in it - that's what goes in there
Old 03-25-2008, 05:20 PM
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Where does this wire lead to?
Old 03-25-2008, 05:36 PM
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pretty sure it goes to your volt gauge in the car
Old 03-25-2008, 06:48 PM
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it is your exciter wire for the regulator.
Old 03-25-2008, 08:17 PM
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anyone have pics?
Old 03-25-2008, 09:07 PM
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What year wiring harness/pcm are you using? Still running EFI or going carbed?
Old 03-25-2008, 09:26 PM
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Now I was under the impression that prior to that connector is the voltage regulator, located inside the alternator, and then from there it went to the fuse box to be divided and ran throughout the vehicle. I came to that conclusion as the only other wire that I have ran on the alternator is the feed line from the battery. This assumption was derived from installing a new alternator on my 3.4L camaro just recently. Which makes sense as ZZP sells a piece inbetween the connector on the alternator and the connector you plug into it to fake the alternator's regulator out to give you another volt coming out on that line. I hope that helps.

If need be I can take a picture or 2 tomorrow after work of my 3.4's alternator as it sits on top and is easily viewable, and I can trace that wire to the main fuse block to verify my assumption.
Old 03-25-2008, 09:44 PM
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get you a plug to fit it (GM sells it for a pretty penny if you need a new one) and just use the second pin from the left in that pic. It needs a switched 12 volt signal with a 470ohm resistior wired inline so the alternator doesnt get the full 12 volts (or it will burn up after a short time). Then attach a wire from the stud on the back of the alternator to your battery.

Heres a pic of mine.....
Old 03-25-2008, 11:43 PM
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"Switched" 12V signal... what would I wire this wire to, to feed it power?
Old 03-25-2008, 11:44 PM
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Oh BTW Lason, got any pics of your car?
Old 03-26-2008, 12:10 AM
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Switched 12v would be any wire that has 12v to it in the start and run positions. IE your old coil wire, the power supply for the fuel injectors, etc.
Old 03-26-2008, 09:35 AM
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http://painlesswiring.carshopinc.com...id/95742/30705

Painless makes a nice plug with directions and the resistor included....
Old 03-26-2008, 09:57 AM
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stop by your local salvage yard and look under any newer GM car and the alternator is bound to have that plug. Im sure you can get it for less than $5 if not free.

What ever you do dont feed 12v straight to the alt.Ideally if yours is a 99+ ls1, hook the wire to the PCM. You can look up the pin number on the FAQ stickies.

Otherwise have a resistor or BATT light inline between the 12V source and the alt

read this as well
https://ls1tech.com/forums/showthrea...led+alternator
Old 03-26-2008, 10:15 AM
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ha, i fed 12V to that wire, the alternator worked for about 8 minutes....then fried. guess i learned the hard way.
Old 03-26-2008, 03:19 PM
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Originally Posted by Datsun350Z
Oh BTW Lason, got any pics of your car?
Here ya go https://ls1tech.com/forums/conversions-swaps/889150-lason-s-240z.html
Old 04-06-2008, 09:42 PM
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I just bought a '98 camaro, and have fried 2 voltage regulators this past week. Voltage shoots up to 16-18v, and then drops to 12v after a couple minutes, and quits charging. The alternator in the car has the plug with 4 wires coming out, and only 1 is used. That wire has been cut and spliced back together by the previous owner. So should I hook up a 500ohm resistor in line, and that will fix my problem?
Old 04-06-2008, 11:38 PM
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Solder a wire to the correct "pin" as indicated and add a 10 cent resistor as discribed-no need for a expensive plug.




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