Testing (On Car): Precautions

Observe the following precautions when making tests on alternator: Do not polarize alternator as it is not required and doing so will damage system. Do not short across or ground any of the terminals on alternator or regulator. Ensure that all connections are secure and tight. Do not operate alternator on an open circuit. Before making any test connections, battery ground cable should be disconnected. Connect ground cable after all test connections are completed. Do not reverse battery leads as this will damage rectifiers.