- What is an alternator exciter wire for?
- Does a 1 wire alternator need an exciter wire?
- Does alternator need excitation?
An alternator is an auto part that transmits power from the fuel system to the battery for operating vehicle accessories, such as the radio, headlights and air conditioning fans. A wire called an exciter generates the voltage needed for an alternator to start working once a vehicle is started.
The answer comes down to the excitation signal. “A 1-wire alterntor has a self-exciting regulator, and doesn’t require a wire running to the regulator to create a turn-on circuit with the ignition. There’s the main charge wire, the exciter wire, and a third wire that can jump between the regulator and the battery stud.
Originally Answered: Why does an alternator need excitation? The field windings on the rotor (shaft) of an alternator need to be energized (creating field excitation) in order to create a magnetic field to induce voltage when passed through the conductors of the alternator’s armature.