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How do you get a battery light to go out in my 1989 mercury topaz?

There are several possible causes for a battery light to come on in a 1989 Mercury Topaz. Here are a few things you can check to try to get the light to go out:

1. Check the battery connections. Make sure the battery terminals are clean and free of corrosion, and that the cables are securely connected.

2. Check the alternator belt. The alternator belt is responsible for driving the alternator, which charges the battery. If the belt is loose or broken, the alternator will not be able to charge the battery, and the battery light will come on.

3. Check the alternator. If the alternator is not working properly, it will not be able to charge the battery, and the battery light will come on. You can have the alternator tested at a local auto parts store.

4. Check the voltage regulator. The voltage regulator is responsible for regulating the voltage output of the alternator. If the voltage regulator is not working properly, the alternator may not be able to charge the battery, and the battery light will come on.

5. Check the wiring. There may be a problem with the wiring between the battery, alternator, and voltage regulator. If there is a break in the wiring, the alternator will not be able to charge the battery, and the battery light will come on.

If you are not comfortable checking these items yourself, you can take your car to a qualified mechanic to have them diagnosed and repaired.

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