Conversions & Swaps LSX Engines in Non-LSX Vehicles
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Old Apr 27, 2011 | 05:43 AM
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Default ls alternater

On the stock alt there is one wire going to the pcm, does anybody know what this wires function is, can I go to a stand alone alt which does not have this wire and will everything work well.
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Old Apr 27, 2011 | 06:33 AM
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One wire comprising several wires? The general turn on I think it's called has multiple wires and plugs into a wide flattish port, then there is the power going back to the battery (though I don't believe directly back is ideal).
Maybe this will help. http://www.chevythunder.com/ Due to the (terrible) site layout direct linking is difficult if not impossible, but there are plenty of wiring and etc diagrams of about anything you can think of if you scroll past the lt1 stuff.
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Old Apr 27, 2011 | 07:16 AM
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If you have a 99+ pcm the single red wire is used to tell the alt when to charge without you will have a no charge situation.
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Old Apr 27, 2011 | 12:39 PM
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Can I use a one wire stand alone alt, I am having trouble making the stock alt fit I would just eliminate the one wire
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Old Apr 27, 2011 | 01:01 PM
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Yes you can use the one wire type. Just tape the wire for the alt back in the harness.
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