battery light on. While driving, all dash lights come on and car dies.

Hello, Does the car run long enough to check battery voltage while running? If not, I would have the alternator bench tested to see if you got a bad one from the store. If the new alternator is not faulty, scan for trouble codes, and post them here. This may need professional diagnostics equipment, just FYI.

Does the car die and then all the dash lites come on?is the engine stalling out and its not a charging system problem