Yes I replaced the fusible link. The voltage I got was at the battery terminals not the alt. Now I had the alternator rebuilt I know it’s good, the battery I had tested advanced auto parts they said it was fine. maybe advanced is wrong, to me everything points to the battery, but when I walk in and have them test it, and they say its good, well that just stumped me. I will buy a new one when I get the money. Now I haven’t found the reason the fusible link went in the first place, and why now the 4wd won’t engage maybe its two different problems. Any ideas where I should start.

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2002 ranger 4x4 4.0
1963 galaxie 500
1959 f-100