i think my alternator is messing up

my battery light just came on..
i bought a new battery 2 months ago..

when it revs past 4k...the light shuts off..

i was wondering..

i have a alternator in my garage off a 95 integra..
and i have a 91 integra..


will it fit?

are all b series alternators the same?

 

yes it will

 

is that your final answer? :]

ive seen ppl wanting to buy alternators and stuff..

but looking for obd2 specific..
if all B series alternators are the same...why are they looking for a obd2 one?

my car is a obd0...and i have a obd1 alternator sitting in the garage..

 

All b series alternators are not the same. The plugs are different