Alternator Wiring Question

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Oct 13, 2020 | 09:35 PM

Jonathan McGilvrey

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Alternator Wiring Question

Hey guys,

I'm trying to get this project driving, but I'm not sure how to get the alternator to charge. The swap is uses a 2015 Camaro SS ecm and the alternator is a new high output NAPA unit that came out of a 2004 Cadillac Escalade, I don't know what type of signal to which pin to send the alternator so itll start charging and I couldn't find anything definitive when I searched.

Oct 14, 2020 | 09:57 PM

LLLosingit

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From: Iowa

Quote:

Originally Posted by Jonathan McGilvrey

You might have better luck trying a local alternator rebuilder if you have one, I have one near me that has been in business for decades and the owner pretty much knows everything there is to know. I know on my s10 swap I only had to wire in a dummy light to get the alternator excited, Other people use a resistor and neither uses ecu input. What is it going into?

Oct 15, 2020 | 05:03 PM

Project GatTagO

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From: Little Austin

Quote:

Originally Posted by Jonathan McGilvrey

Holley 197-400. The wire already has the resistor built in and should be connected to switched power. I would also add a terminal to the S cavity and wire it to a point in the electrical system that experiences the most current draw, in other words, the main power distribution point.

Andrew