Scion xB Alternator Replace/Remove

I Saw On Youtube It Is A 19mm But The Only 19mm Bolt/nut Just Spins The Belt - Where Can I Find A Diagram Or A Caveman Drawing How To Remove...

I Recently Replaced My Tensioner And Drove My Car And It Was Running Great, But The Battery Light Came On And Wouldn't Go Off. So, I...

I Would Like To Know How To Remove The Bottom Bolt From The Alt. It Dose Not Want To Turn Like A Regular Bolt. I See A Nut On The Back Side...