W124 alternator issue

[KarlGustav9]

Hello

I have a issue with my car's alternator, a few days ago it started squeaking when i took it apart i noticed that the pulley was loose, when i put everything back together the alternator didn't charge anymore (it charged when it was squeaking). I did accidentaly forget the battery and the generator positive wire shorted it self for a second. And after that the dash lights started flickering, the abs, bulb and battery light started flickering and the other ones didin't even light up when i turned the ignission on.
Can someone help me with this issue?

I am from Estonia so i'm sorry for my bad english.