Clock or #6 Preset
One of the the quirky things about these radios is the clock or non clock versions. Some Ford vehicles used an external digital dashboard clock so the radios in those vehicles utilized a #6 radio station preset. Think of the 1994-1997 Mustangs with the clock on top of the dashboard.
If your vehicles did not have a digital dash clock, they used a radio with only 5 radio preset buttons and installed a clock in place of the #6 preset button.
