Old rusted wiring connections

Any tips on removing the old harness from these connections that go to the front parking lights? 1965 Barracuda. I've nearly destroyed one of them and it wont come out. Not concerned about the 60 yr old harness, it's going to the trash, but trying not to mess up the connector. One of the lights is dim, one doesn't come on at all, and I'm sure it's the rust and corrosion in these connections. Am I better off cutting off the old connector and crimping in a new one? If so, a link to the correct spade connector would be awesome. Thanks.

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