That new alternator may be At Fault. Have the charging system tested at your local auto parts store.
the light comes on when the alternator is bad or your regulator has gone bad. some regulators are built into the computer.
alternator, or a wire to alternator loose
Usually when the battery light comes on its the Alternator, or a bad wire from Alternator to battery, but id check Alternator first.
The battery light comes on when the alternator output voltage is too low or too high. You have a wiring or regulator problem.The battery light comes on when the alternator output voltage is too low or too high. You have a wiring or regulator problem.
Defective alternator or bad wiring.
Faulty Alternator?
Your alternator is defective and not recharging the battery. Have the alternator checked.
alternator faulty
Battery light usually means alternator not charging. Most common solutions would be be a bad alternator, bad connection, or loose alternator belt. If the battery and alt test ok than check the connections to the alt. You may also have a battery drain (something that is staying on and killing the battery)
have an alternator, battery, and electrical check to find out what the problem is. battery may not be taking a charge, or the alternator is not putting out enough voltage.
you have a short where negative is touching the metal of the car or it is grounded inproperly
alternator is not charging battery, or loose - corroded connection on battery cables