How To Tell If Alternator Is Bad In Car. Dimmed or flickering headlights Since your headlights require power from the alternator to perform. The main purpose of the alternator is to provide power to the starter ignition and all of the electronic.

If the dashboard gradually dims the alternator is likely at. As your car has a lot of electrical equipment in it several signs can show up indicating that the alternator is not providing enough current. Be sure to keep an eye on the gauge to see if it decreases sin voltage or amperage.
Here are some of the indications of a car alternator problem.
Some of the things to look for are no-starting and trouble starting dimming lights and problems with stereo system output. The main purpose of the alternator is to provide power to the starter ignition and all of the electronic. While running the car note the brightness of the interior lights. This is really obvious when headlights are on at.
