I have an 88 F250 that my dad was working on, and ended up with an extra rebuilt alternator somehow. Thing is, it isn't for the F250 (I'm 99% sure, unless there's another plug involved) and I'm trying to get rid of it, but don't know what make it's for. No markings/part numbers that I can see. Picture is below. I appreciate the help. Thanks!
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Got a pic of the entire alternator?

 

yup, here's a pic:<br>

 

It looks to be from a Mopar application, judging by the position of the mounting holes.

 

na, it could be an updated version of an alternator. Ford changed plugs on some different models because the plugs started to fail

 

Some GM alternators had this kind of plug on some externally regulated systems. Not sure about this one tho.jd