Thank you for asking your question on Just Answer.
The 1995 Ford F350 wasnt OBD2 , it was still the EEC5 system and it requires a old school scanner and the connector is on the Left front inner fender . See attachment.
The best way is to have a real scanner not just a code reader. To do this you will likely have to take it to a shop. What kind of issue are you having?
Well its not so much as and older scanner but it has to be a real scanner . They run from 4,000 to 8,000. .
If you having an Idle issue I would start with cleaning the IAC (idle air control) solenoid and the throttle body and plate, and making sure the there are no vacuum leaks. If the check engine light is on then I can help further if you get me a real code or codes.