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Voltmeter

Scott, all said so far is correct, plus Voltmeters are safer and more convienient to install. A fully charged 12V battery should read 12.6 volts. Basically anytime the engine is running, and you see 13 or more volts on the meter, the Alternator is charging the battery. Turn on all accessories, ONE at a time, and watch the voltmeter. If it never drops below about 13 volts after all are on, then the Alternator and Voltage Regulator are working fine. HTH, Tom






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