1973 340 Wiring

Hello. I’m having some difficulty determining where different electrical connections go. I have two of the same electrical connectors going to the two posts on the alternator and I have the battery cable sandwiched between a nut. As shown in one of the pictures attached, and circled in blue; I have a wire with a thin slip on connector, a small plug type wire, and a wire that seems to have been cut and I am not sure where any of these three are supposed to go. Any help would be appreciated. Thanks in advance.

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