Q: Car battery light constantly goes on and off.

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I go to start my car by a boost. Once the car is started and boost cables are taken off the car battery light comes on, revs up on its own till battery light goes back off, then repeats the same process. Sometimes she even shuts off.

However, when the car is still running and we take the battery posts off, the alternator is able to run the car fine on its own. Many people tell me different things from; battery problems, alternator problems, and even wiring problems.

More information would be great!

My car has 180000 miles.
My car has an automatic transmission.

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