A Mechanic’s Guide: Testing Alternators With A Screwdriver – Unlocking Automotive Secrets
How to Test an Alternator with a Screwdriver: An Easy Guide Using a screwdriver as a voltmeter, check the voltage across the alternator terminals (13-14.5 volts). Test for continuity between terminals and ground. Connect the alternator to a battery using the screwdriver; a working alternator produces 12-14 volts. Observe the indicator light; a faulty alternator…