Need some advice

Okay so I warranty replaced the ignition coil. Same problem so I checked voltage at the alternator field and I found I wasn't getting any voltage. So I ran a new temporary wire from the fld of the voltage regulator to the field of the alternator. Still same issue.

The only real symptom I can find is when I accelerate the ammeter/alternator on the dash drops and then the car stalls. Is it possible that the alternator is dieing under load?