Duster fusible link wiring problem

This is a diagram of the bulkhead connectors.
If the FSM matches your car...
The solid red arrow points to the terminal position for a red wire that connects to one of the fusible links.
The solid black arrow points to the terminal position for a heavy black wire that connects to the other fusible link.

An ohm meter with a probe on each of those two terminals should show zero resistance. (Battery must be disconnected to do a resistance or continuity test)
That would show the two are connected together.
You could then check for continuity of from the terminals to the battery positive terminal (disconnected). That would verify they are on the main cable

1976-BulkheadJ1R6.jpg