How do you connect an engine code scanner to a 1989 ford bronco?

To connect an engine code scanner to a 1989 Ford Bronco, locate the diagnostic connector, which is typically found under the dashboard near the steering column. Use a compatible OBD-I scanner, as the Bronco from this year utilizes the OBD-I system. Plug the scanner into the connector, turn the ignition key to the "on" position without starting the engine, and follow the scanner's instructions to retrieve any diagnostic trouble codes.