On an '86 Chevy Caprice, the alternator typically has three main connections: the positive terminal connects to the battery and is usually marked with a "+" or "B," the negative terminal connects to the engine block or chassis ground, and the smaller wire connects to the ignition or warning light circuit, often marked as "I" or "L." Ensure the connections are secure and clean for proper alternator function. Always consult a service manual for specific wiring diagrams and details.
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