Hi,
I have a feeling that the problem is related to the brand you first had. There really isn't a lot to cause one to fail. I attached a pic of the entire wiring schematic for the charging system. If you take a look, note there really isn't much that would cause it. The alternator is internally regulated and is protected by fusible links and fuses to prevent damage.
Do me a favor. Now the new one is in, check alternator output. All you need is a multi meter or volt meter to do it. Here is a link that explains how to check it. Do this and let me know what readings you get.
https://www.2carpros.com/articles/how-to-check-a-car-alternator
Let me know.
Joe
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Saturday, September 19th, 2020 AT 10:01 PM