Fusible Link?

[Rylinkus]

So my mother in law was using my car and essentially the power steering, brakes, wipers went. Also issues getting it in gear. A shop near her diagnosed it as the alternator. I replaced the alternator, but foolishly didn't remove the battery to do it. All the symptoms are still there, though this altrernator doesn't tick loudly. So from what I've read the issue is likely the fusible link. It doesn't look blown to my eye. Is there a way to test it? And advice on getting it off. The 2 bolts holding the red and black wires are not budging. Any helpful hints? Thanks.