You will need a screwdriver.
1. Disconnect the wire from the "–" terminal of the battery.
2. Remove the two screws securing the unit to the instrument panel frame…
3. …and remove the control unit with the wiring harness from under the instrument panel.
4. Disconnect the wiring harness connector from the vehicle's anti-theft alarm control unit and remove the unit.
5. Install the control unit in the reverse order of removal.