How do you enter security code on the ba ford falcon?

To enter the security code on a BA Ford Falcon, first, turn the ignition to the "On" position without starting the engine. Next, turn off the radio, then press and hold the "1" and "6" buttons simultaneously. While holding them, turn on the radio; the display should show "CODE." Use the preset buttons to enter the security code, and press the "Enter" button to confirm. If entered correctly, the radio should unlock and function normally.