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Old Jan 2, 2012 | 01:34 PM
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Default Alternator wires

I've been tracking down a problem with my car and might have found it. First the problem, when i crank my car up sometimes it likes to reset the computer which is giving me awful gas mileage. Can anyone tell me what the wire connections go to?
Attached Thumbnails Alternator wires-alternator.jpg  
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Old Jan 2, 2012 | 04:09 PM
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Is that a stock alternator or a truck higher amp alternator?

From what I remember ls1 f-body alternators only have one wire coming from the alternator connection.
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Old Jan 2, 2012 | 05:26 PM
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thats the exiter wire is what i think its called only one wire is used it tells the alternator to charge the battery
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Old Jan 2, 2012 | 07:35 PM
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Old Jan 2, 2012 | 08:01 PM
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Originally Posted by astro11271984
thats the exiter wire is what i think its called only one wire is used it tells the alternator to charge the battery
So the alternator can work with that being the only wire? What are the other wires for?
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Old Jan 2, 2012 | 08:53 PM
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only 1 wire on a f bod alt.........*reference said pic*
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Old Jan 2, 2012 | 10:31 PM
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The wiring harness on a F-body to the alternator has just that one wire in it.

I'd say it's highly doubtful that the alternator or it's connections are causing the PCM to reset when starting. Does this happen every time you start it? Check all your ground points as well as main positive connections. Are the battery connections good, clean and solid? Everything to the starter is good?
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Old Jan 2, 2012 | 11:13 PM
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the connectors ive found both the ac delco on rock auto and bwg at oreilly from the first page of this thread https://ls1tech.com/forums/generatio...-failures.html have four wires. someone explain?
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Old Jan 2, 2012 | 11:27 PM
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some replacement wire connectors you can buy will have 4 wires......but the f bod ONLY needs ONE
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Old Jan 2, 2012 | 11:34 PM
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Old Jan 3, 2012 | 06:03 PM
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It doesnt happen everytime i start it just sometimes, the connections are good to the battery and the starter. This problem has been off and on, I've read that if your volts drop beyond a certain point on crank up it can cause it to reset. I got the alternator checked out and it was shot.
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Old Jan 3, 2012 | 07:40 PM
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Cool. Did replacing the alternator fix your problem?

Usually, a bad alternator causes the battery to run low to the point that the engine won't crank.
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Old Jan 3, 2012 | 10:53 PM
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i understand it only needs one. strange that the oem ac delco part has 4? just extras to cut? weird
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Old Jan 4, 2012 | 12:57 AM
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other body styles do use the extra wires
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