C130 is the connector.
I agree with what Jim said in the other thread, vacuum controls the C6 automatic. The tach should have nothing to do with it.
Does the tach work with those two extra wires disconnected?
Edit: yes you should have dark green with a yellow dash and black with a light green dash hooked to the sensor.
Edit again: looks like your wiring has stripes not dashes. If there’s no stripes on the two black wires, they must be a ground for something.