This is how it's supposed to be wired, but I also see changes and disconnections.
Normally there would be a jumper from the top to bottom connectors on the left side and another wire which is cut off on the top right connector.
The top right one should come out of the harness next to the firewall and somewhat close to 12v in the start position of the key.
This diagram should be the one you need.
Not sure if that ignition box is 4 or 5 pin.
The 5th pin is not used in some boxes.
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