Pontiac GTO 2004-2006 The Modern Goat

04 GTO Alternator Wiring Help

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Old 09-20-2023, 08:43 AM
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Default 04 GTO Alternator Wiring Help

Hi everyone! I’ll get straight to the point!

I have an LS Swapped 350z and I has a 04 GTO 2 Pin Alternator… It used to charge but all of a sudden, it stopped. Naturally I figured its the alternator because I saw my voltage gauge drop to just 12.0-12.5 while driving.

Took out the alternator and had a shop rebuild it. It was tested good but when I slapped it back on, car is still not charging.

I ended up redoing my whole wiring system for my alternator and it goes as follows:

4G wire from Battery + to Alternator Post
GTO Pin A connects to Battery +
GTO Pin B (Exciter Wire) connects to an Ign Switch source with the 470ohms resistor in line.

I do not know what else it could be? Maybe I’m doing something wrong and someone else can help me diagnose.



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