That should be the OBD I system. OBD II started in 1996.
It's a USB loopback connector.
for most Saturn's, the diagnostic test port was below the steering column and a little to the left.
Your EEC test port is in the engine compartment by your power distribution box EEC IV / OBD I system
Quote: "Left side of dash, 6 way rectangular connecter." You will find it right behind the lower right part of the dash on the drivers side near the center console or ash tray. It is a blue connector attached to the knee bolster.
There is no test port.
In a RHD the port is in the passenger foot well above the passengers right foot.
The Villager does not have a test port. You need to tee into the line at the fuel filter.
The 1991 Taurus has the old OB1 system. The data connector is at the firewall ( under hood )on the passenger side. It consists of a 6 pin connector and a single pin self test connector. This vehicle can be self tested through the check engine light. You will need a manual for the procedure.
I think you are referring to the Universal OBD (or OBD2) test port. This is the plug under the dash that you plug the OBD code tester into. It may also be referred to as the 16-Pin Data Link Connector (DLC).
The code reader test connector, on your Ford E2 50, is located beneath the dashboard on the drivers side. The connector is on the left side of the steering column.
The tool designed specifically to test DC current from a Molex connector is called a Power Supply Tester.
Under the Hood Left side Usally Close to Shock Tower Usually Gray In Color Have seen Black It Also Has a single Connector Which Is called STI Self,Test,Input the Bigger One Is called STO Self,Test ,Output.......