When we say "single-wire," this is what we're referring to. A single 6-gauge lead runs from the positive post on the solenoid to the alternator, with circuit protection along the way.

We update the charging system by installing a new Powermaster one-wire alternator on our 1964 Chevelle daily driver.

The charging system of your Chevy is a vital piece of the reliability puzzle, and if you’re relying on a crusty original alternator you might be on borrowed tim ...