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Old 02-22-2013, 08:14 PM
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I am confused again now.....seems opinions vary in favor of 1 wire vs. 3 wire depending on who you talk to and what you read.
Guess I will study the subject some more.........(electrical is not my strong suit)

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  #32 (permalink)  
Old 02-23-2013, 04:27 AM
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The one wire works very well at, higher than idle rpms, but i haven't had good luck with them and don't use them.

The way I understand it.......With the 1 wire, terminal 1, exciter wire, is connected to the lg lug on the back of the alt (battery feed) either internally or externally depending on the model........at low rpm the sense wire, terminal 2, isn't picking up much of a demand on the elec system therefore the alt isn't producing much juice and terminal 1 isn't getting very excited, as the rpms increase, terminal 1 gets more juice and more excited and sends a strong sig to the alt and the alt produces more juice etc.......

with a three wire the sense wire is tied in well away from the alt and takes advantage of the long wire run to get a truer sense for the demands on the elec system and that kinda buffers how much juice the alt produces

IMO if the one wire was better than a three, it would be cheaper to install, that being said, GM would have done it long ago.
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Old 03-11-2013, 08:01 PM
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three wire
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Old 03-12-2013, 07:16 AM
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I use the three wire but I like to put the radio on and play around with my car... I like being able to adjust the voltage for optimal (13.5-14 volts) points (distributor) performance..

I never tried a one wire but have heard many good things about them... If you don't like to adjust things, the one wire might be the best way to go..
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Old 03-12-2013, 10:47 AM
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Ugh, one-wire is NOT the way to go, unless you're too lazy to hook up 2 extra wires. It's a question of doing it easy, or doing it right.

Read Mark Hamilton at MadElectrical.com. He'll set you straight...
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