Question about 1988 Nissan 300ZX

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1988 Nissan 300ZX, Installed a second new battery, but car still shuts down, when headlights are in use--alternator or some other part?

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Might be...
Your battery is just to get the car started, then the alternator supplies the power to run all electrical and keep the battery charged up. If the alternator fails, it will drain any battery to nothing. You will need a volt meter to test it. Normally a battery has around 13 volts with the car not running, (DC) and when it's running you should get an increase in voltage. If you have less, your alternator is not working.

Posted on Aug 24, 2010


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