Belt and alternator questions

[nad]

Okay, so I took the belt off of my alternator that routes the power steering, compressor, and crank pulley. Well when I put it back on, it squeaks really bad now. I did not change the belt, I just took it off and put it back on, and suddenly ended up with squealing.

Well this evening I tried to turn my KC lights on while running my headlights and windshield wipers. Well everything dimmed down and the whole vehicle lost a lot of power. So I'm debating on whether the alternator is actually bad, or if I just need to change or tighten/loosen the belt slightly.

Can anyone give me any advice on this? Thanks in advance.

 

[R77K10]

you running v belt or early serpentine or later serpentine?

draw down with lights turned on is a big thing,

that doesnt sound good

bad wire connection somewhere or something else bad it sounds like


hmm

 

[1979jimmy350]

check your belt for the correct tension first, then move on to testing the alternator if changing the tesnsion does not produce any results