Isuzu Trooper Alternator Not Charging

I Have Replaced Several Alternators. My Latest (wilson) Volts Drop On Hard Ecceleration, And When I Rolls The Back Windows Down? It Was So...

I've Had This Vehicle For About Going On Three Years I Got A Good Price. He Ran Well When I Got It It Still Runs Well The Only Problem...

Transmission Started Acting Like It Was Beaing Held Back In Second Gear, But Another Guy Said Something About The Alternator Would Effect...