Nissan Pathfinder Alternator Test

I Recently Brought My Car To An Auto Parts Store To Have The Charging System Checked. I Had Previously Had A Dead Battery Issue Once Or...

All Of My Dash Gauges Went Flat, The Battery Light Came On, The Lights Stayed Bright Although They May Have Dimmed In The 3 Mile Drive Home....

I Have Replaced The Alternator But Am Still Having A Power Drain And The Car Stops. What Else Could It Be. I Have Had The New Alternator...