How to Wire a GM Alternator for Your Project Car

If you're staring at a mess of wires under the hood and wondering how to wire a gm alternator, you aren't alone; it's one of the most common hurdles for anyone working on a classic Chevy, a hot rod, or an engine swap. These alternators are legendary for being reliable and simple, but if you get the connections wrong, you'll end up with a dead battery or, worse, a melted wiring harness. ...

February 9, 2026 · 7 min · Leder Mcsweeney