In the 6 pin connector, with the connector dis-connected, probing the harnes side of the connector (not the steering column side), with the key on, there is voltage on the yellow wire and the blue wire. With the brake pedal depresses there is also voltage on the green wire.
With the 6 pin connector connected, and the two pin connector disconnected, there is no voltage at either the green/orange or orange/blue wires in either side of the connector.
65 GT coupe. 351W. Edelbrock Performer RPM heads, manifold, cam. Toploader. 9" with 3.70 trac-loc. 4 wheel discs. Leather seats. The actual car I learned to drive in over 45 years ago (except for the mods!).