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Hello, my name is***** for the question. Can you tell me if the light goes right off if you restart it? Do you have a voltage meter to run some tests?
Here is what we need to do. We need to see what the voltage is at the battery, with the engine running, and the light on. You then need to see what the voltage reading is at the large terminal at the alternator. Many times this is an issue with the positive cable or the main wire to the alternator.