Take it to auto zone and have the battery and alternator checked out free.
The alternator switches off
Very confusing question. I assume you mean what light comes on when the batteries is defective. If that is the case then the red battery warning or charging system warning light may come on. And then again the light may not come on at all. The light is there to warn you about a problem with the charging system and not necessarily with the battery.
possible wiring malfunction
Why would battery light come on then go off
because the battery needs charged or need a whole new battery
my battery light has come on, do i need a new alternator
Does your underhood light come on ? Or if you have the key in the ignition and your drivers door open , do you hear the warning chime ? If not , it sounds like a poor battery cable connection or a dead battery .
It could
Probably the alternator. Have it checked if it is charging.
There could be several causes for the battery charging circuit warning light remaining "ON," and some that come to mind at the moment include: * The battery is seriously undercharged. * The alternator or generator is not working. * There is a defect in the light circuit.
When our 93 grand prix battery light came on it meant that we needed a new battery. We tested the battery with a volt meter and the battery read 1 volt, it should be 12volts. Still wondering how to reset the battery light?