I know that the 2001 model is OBD2 Compatible. Check out this site: www.carplugs.com/obd2ford.html
under the dash bor
under steering wheel column
where is the obd port located on a 2002 thunderbird
Under the dash near the steering column.
On the drivers side under the dash below the steering wheel.
The OBD2 connector is located underneath the ash tray.
On the bottom side of the dashboard, in close proximity to the steering column,
The OBD ll syetem was not approved until 1996, so doubt if any '93 car had a connector for it.
Look underneath the steering wheel column, and towards the hood release latch there is the OBD2 Connector.