Hello mudbilly,
Yep, those were the days when every year brought a newly styled car and most folks were on a two-year trading cycle. When a neighbor brought a new car home then, there was actual excitement and everyone had to see the new addition to the family.
Back up lamps were considered a luxury item then. Standard on upscale models such as Lincoln, T-Bird, and select Mercury vehicles, but an option on the lowly Ford. The reverse or back up lens would have been in the center of the red tail light lens.
The pictures show the standard 62 Ford taillight lens, the service part lens for a backup lamp model, the C2AZ-15511-A reverse lamp lens, and the assembled lamp with the reverse lamp. There was also an over the counter kit available that included everything needed to add reverse lamps to your family truckster.
C2AZ-13450-A Standard Lens
C2AZ-13450-B B/U Lamp Service Lens
C2AZ-15511-A Reverse lamp
Assembled Lens