Help!! Altenator Wiring
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Teching In
Joined: Mar 2007
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Help!! Altenator Wiring putting a ls1 327 in my 69 camaro and its all done and running but need to wire in the altenator not sure how to hook it in to the stock wiring harness any help would be great thanks.
Choice Automotive in Alberta canada did my harness worked great
Choice Automotive in Alberta canada did my harness worked great
Joined: Sep 2004
Posts: 3,148
Likes: 12
From: Downers Grove, IL
I can`t really give specifics without knowing which what engine, and alternator you have, but if you check the FAQ sticky post #13 theres a link to how to hook up LSx alternators.
Here is a copy/paste of what G-Body had me do to mine, but remember, my alternator is a 2000 f-body so yours may be different.
Since it is a f-body alt it should be an easy 1 wire hookup. You only need to connect terminal B on the alternator to a +12V resistance source. Theres more info in this thread https://ls1tech.com/forums/showt...ight=alternator
But basically you can go about it in 2 ways.
A. Connect a wire to terminal B on the 4 pin plug and then connect it to a 470 ohm 1/2 watt resistor and then connect the other side of that resistor to a +12V IGN+ source (IE coil wire).
B. You could also use the factory idiot light in your monte. On the original 305 alternator there was a brown wire that connected to the 2 pin connector for that alternator. It goes into the dashboard, to the alt idiot light and then to +12V IGN+. If you hook this wire up to the alt the idiot light for the alt will work just like it did from the factory.
Since it is a f-body alt it should be an easy 1 wire hookup. You only need to connect terminal B on the alternator to a +12V resistance source. Theres more info in this thread https://ls1tech.com/forums/showt...ight=alternator
But basically you can go about it in 2 ways.
A. Connect a wire to terminal B on the 4 pin plug and then connect it to a 470 ohm 1/2 watt resistor and then connect the other side of that resistor to a +12V IGN+ source (IE coil wire).
B. You could also use the factory idiot light in your monte. On the original 305 alternator there was a brown wire that connected to the 2 pin connector for that alternator. It goes into the dashboard, to the alt idiot light and then to +12V IGN+. If you hook this wire up to the alt the idiot light for the alt will work just like it did from the factory.
Joined: Sep 2004
Posts: 3,148
Likes: 12
From: Downers Grove, IL
The f-body and truck alternators are different. All the 98-02 f-body alternators use a single wire hookup. Most of the trucks use a 2 wire hookup, but I have seen a 1999 6.0L truck that only used one wire. If it is a 2001 or newer alternator I would say it is a 2 wire hookup, if its is a 99-00 I am not so sure. The 2 wire truck alts use 12V through a resistor or lightbulb to terminal B, and IGN + 12V to terminal C.
