Lot of folks talking about purchasing a "junk yard" alternator----Not!!
What do you buy at a junk yard?--Junk!!
Just as the name implies. Been there,seen it, done it, and have been
very mad, & frustrated.
You are so much better off purchasing a remanufactered, ( not rebuilt)
electrical part, and get the job done one time.
There is nothing that really aggravates me more than do the same job
twice, just because I thought I was going to save a couple of bucks, and
wind up with a part, no better than what I took off to start with!