Have you drove the car around? Sometimes it takes the alt. awhile to "kick" in. Say around the block twice?
You can have the alternator tested free of charge at just about any major auto parts store. By the way, a bad alternator will not "discharge" a battery - the alternator's function is to provide the charge to the battery. If the alternator is faulty, then it is not providing the charge necessary to keep other components from discharging the battery. I had the alternator tested and it was charging. If the alternator has a bad diode, it will discharge the battery. I replaced the alternator and everything is fine.
The computer only resets when the battery is removed. The alternator just charges the battery, so if the battery is left connected when the alternator is replaced, the computer should not reset.
Inside the alternator
Voltage regulator or loose wire.
alternator needs to be replaced. battery also might be a problem due to the alternator not charging it
defective alternator
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 alternator and battery. The alternator should have 2 connections.
you have a short where negative is touching the metal of the car or it is grounded inproperly
Simple. Go to Sears. They'll check everything - alternator, battery, cables and more - everything with no questions asked.
did you check the alternator??
your Alternator
?ignition control module/pickup