How do you Set radio clock in 1991 Mercury Tracer?

1) Turn on the radio (even a little is fine; it doesn't matter if it is set to a station or not) 2) Push and hold the volume knob (tapping it will switch between viewing the clock and the current radio station) 3) Use the 'tune' buttons to set hour and minute. The left button sets hour, the right button sets minutes. Once you've set the correct time (or the incorrect time, if that's your thing), just let go of the knob.