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Q: Why wont my altenator charge my battery with a new altenator and battery? on 2007 Mazda B4000

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Altinator went, I replaced it. Didnt help. Wont charge battery. I changed battery, checked every connection and fuse. I checked for any draws, just a week draw probably from my financing company's tracking system. Mazda service tech told me that the altinator must be either a ford or mazda manufactured which are twice the price. Is this correct? altinator i put in is testing good.
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Will it start and run? If so and alt. not charging after you checked everything else, sounds to me like a defective alternator!
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