Here'* a photo of a terminal with a wire attached.
It is NOT a ribbon cable is that is attached to the male, vehicle side Dock-N-Lock. They are all individual conductors with these terminals attached, just like you would expect to see with virtually any other part of the vehicle wiring harness.
If you pull your radio, you'll see in the connector in the back of the dash. You'll notice that there aren't gold plated terminals in all 32 of the positions. GM only installs terminals and wiring in the positions required based on the vehicle options.
To remove the Dock-N-Lock from the dash, you'll need to slide the connector upwards and with a little bit of a turn you should be able to work it forward. There won't be a lot of room, but there will be enough. There will be a blue retainer on the back of the Dock-N-Lock. This is a secondary securing device for the conductors. On all the GM connectors (at least in this vintage of vehicle), have a redundant method to ensure the conductors remain secured in place. If you remove this retainer, the other wires won't all come out (unless the connector housing in damaged - which would be very unlikely). This retainer, although sometimes a bit of a hassle to work back into place, should definitely be reinstalled before placing the connector back into the dash.
If you do in fact follow through with this install, the audio cable should be routed through the back of the dash and come through the same hole as all the other wires going to the Dock-N-Lock.
With the terminals crimped on the audio cable (there should be 3 in total), you will insert each of these into the correct location of the connector housing. Once the terminal is in, it will clip into place. IF YOU NEED TO REMOVE THEM AGAIN, there will be a small plastic tab which can be access from the wire side of the connector. It is molded so that it clips into the side of the terminal once the wire is slipped into cavity. Gently pull the plastic tab away from the terminal while gently pulling on the wire. The conductor should come out easily. If you're careful about placing the wires into the correct cavities, this should not be necessary.
If the connector is positioned the way it normally would be when secured into the dash, the following positions are what you're interested in.
"B" terminals are on the top, "A" terminals are on the underside. Position 16 is closest to the driverí* side, while position 1 is closest to the passenger side.
A9 - Is the Audio COMMON conductor.
A10 - is the LEFT Audio Signal (+).
A11 - is the RIGHT Audio Signal (+).
So, all the terminals will be inserted into the underside of the connector housing starting at the 9th position from the RIGHT if you're looking at it head on.
There is also a BARE conductor in the audio wiring harness (referred to as the drain wire). This is NOT connected at the radio end of the harness and is just cut off flush with the cables outer sheath.
Hope this helps.