Technician A is correct in suggesting a voltage-drop test to check for excessive resistance in the wiring between the alternator and the battery.
Technician A is correct. To check for excessive resistance in the wiring between the alternator and the battery, a voltage-drop test should be performed. This test can help identify any voltage drop due to high resistance in the wiring, indicating a problem in the electrical connection.
Technician B's statement about checking the rear bearing of the generator for magnetism is not directly related to addressing charging system issues, so Technician B is not correct in this context.
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