It's a 16-pin rectangular connector and is usually black in color.

To locate it easily, look for a small rectangular opening below the steering wheel and to the left of the steering column. You might need to remove a small trim panel or cover to access it.

Important Note: While this information is generally accurate, it's always a good idea to consult your Volvo 960 owner's manual or a trusted repair manual for the most accurate and detailed information specific to your vehicle.