Question about 1991 Cadillac Seville
Loose all power but head light & dome light
The first thing to check is whether the alternator is operating properly. A simple test is to start the car if you can and test the voltage across the battery. If the voltage is above the rated voltage by a couple of volts then I guess the alternator is not the problem. Keep the voltage tester connected to the battery and stop the car. If the voltage drains away below the battery rating the battery is at fault. If however the voltage is very high or low when the car is running suspect the alternator. Hope this helps.
Posted on Jan 20, 2009
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Posted on Jan 02, 2017
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