Fig 1. This shows the connection of the detector pin from the 3rd slot on the computer (from the bottom) to the detector control system. The other pin that's labeled shutter pin is attached to the shutter control box. Click here to view the Shutter schematics.

Fig 2. This picture shows the connection from the detector pin to the 3rd slot on the computer (from the bottom).

Fig 4. This picture shows  connectors attached at the rear end of the detector control card that go to the detector.

Fig 5. This shows the connection to the detector.