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Old 06-14-2019, 02:10 PM
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Default 3 wire alternator

How do i convert a 3 wire alternator to 1 wire alternator on a LS swap. Wires are gray, brown and blue. I tried to post earlier, so if it double post I'll delete.
Old 06-15-2019, 12:13 PM
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Originally Posted by Jungerman
How do i convert a 3 wire alternator to 1 wire alternator on a LS swap. Wires are gray, brown and blue. I tried to post earlier, so if it double post I'll delete.
What series alternator are you working with? What vehicle did it come out of?

Andrew
Old 06-15-2019, 05:10 PM
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Originally Posted by Project GatTagO
What series alternator are you working with? What vehicle did it come out of?

Andrew
Its a delphi automotive. 02 yukon
Old 06-15-2019, 05:14 PM
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Originally Posted by Jungerman
Its a delphi automotive. 02 yukon
There are a dozens of posts about alternators. Have you searched?
Old 06-15-2019, 05:34 PM
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Originally Posted by Project GatTagO
There are a dozens of posts about alternators. Have you searched?
Yes, ive searched. Ive seen something about adding a ohm resistor? To a 12v source? Maybe. I can't remember exactly the right parts was described. I'll have to go back in the search history. I've found the 4 pin diagrams, but not the 3 pins that I have. I didnt know which wire on mine would be the only one i needed to make it work. Ive tried posting pictures but it has to be approved by the mods. I just need to know which wire to use is all. You cant search the word 3 because its too short and common. So my search for 3 pin diagram on here was a dead end. Thanks
Old 06-15-2019, 06:46 PM
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I'm pretty sure you have 4 pins on your alternator.
Old 06-15-2019, 07:35 PM
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Originally Posted by Project GatTagO
I'm pretty sure you have 4 pins on your alternator.
Possibly. I have 3 wires coming off the plug. So i thought it was 3 pin. My bad. Do you know which wire it may be to make it work?
Old 06-15-2019, 10:31 PM
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You need to wire the L terminal to s 12v sourse throuya resister and the S terminal to the the point where your main power distribution point is.
Old 06-20-2019, 12:44 PM
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I believe Holley 197-400 harness will do the trick has a resistor built in.
Old 06-21-2019, 08:12 PM
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Originally Posted by TORK?
I believe Holley 197-400 harness will do the trick has a resistor built in.
Exactly what i was needing. Thank you for help unlike the other that posted on this thread.
Old 06-21-2019, 08:17 PM
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They Holley pigtail only has the L wired, but you can easily add the S terminal. The plug is a Metripack 150 serious and the terminals are readily available on Mouser or Waytek.
Old 06-25-2019, 07:58 AM
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d44s work as a 1 wire , with the output connected to the battery , and the plug unconnected
Old 06-25-2019, 08:12 AM
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Originally Posted by ijimmy
d44s work as a 1 wire , with the output connected to the battery , and the plug unconnected
Yes, it does work, just not as well as it can.




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