On a 4.3L Chevrolet engine, the alternator typically has three main connections: the large terminal for the battery cable, which is usually marked with a "+" sign, connects directly to the battery; the smaller terminal, often marked with "L" or "S," connects to the ignition switch for the charging light; and the ground terminal, which connects to the engine block or mounting bracket. Always refer to the specific wiring diagram for your model year for precise connections.
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