Reverse Lights

I have a '66 Newport that when I put it in reverse the reverse light won't come on unless the shifter is over the "K" in Park. Any ideas on how this can be adjust so the lights come on when the shifter is over the "R"? I was told I could make an adjustment under the dash, on the steering column.........just look for 2 screws and then adjust the "bracket" as needed. This is all I could find on the column..............the firewall is at the bottom of the of the photo....

Reverse Lights
Author: 5fty7vn