open the ashtray. gently pull it out and voilá! an OBD-2 port :)
The 2003 Honda Civic OBD 2 port is behind center console
The 2003 Saturn Ion OBD 2 port is on bottom edge of dash; above hood release
The 2003 Toyota Tundra OBD 2 port is under driver side dash above accelerator pedal
The 2003 Hyundai Elantra OBD 2 port is on lower edge of dash between steering column & hood release
The OBD connector is under the dash on the driver side.
Your obd cinch socket 16 pin is under the ashtray in centre console
The 2003 Suzuki Vitara OBD 2 port is on bottom of dash, above accelerator pedal
The 2003 Chevrolet Blazer OBD 2 port is on lower edge of dash; right of parking brake pedal
The 2003 Chevrolet Malibu OBD 2 port is on lower edge of dash left of steering column
The 2003 Volkswagon Jetta OBD 2 port is "in cavity at bottom of dash, between steering column & kick panel"
The 2003 Honda Accord OBD 2 port is under driver side dash above dead pedal