Disconnecting the battery while the engine is running isn't a valid test for alternator function and may damage sensitive electronic parts. Instead, use a common voltmeter and the following test ...

Your alternator quietly does more than keep the battery topped up. It turns the engine’s rotation into a steady flow of ...

This is not an article about installing an alternator. Read a Chiltons manual if you need instructions. Its also not an article about how to rewire an alternator. Ask for a wiring diagram when you ...