No Reverse Lights

So I have a problem. I have a 1968 Dodge Dart 270 Sedan with an automatic and a slant 6 and I have no reverse lights. I found the reverse light switch mounted on the base of the steering column near the firewall and tested it. The switch works and the bulbs work. HOWEVER there is nothing there to actually push the switch on when I shift. There is a hole on the column, and it almost seems as if a pin should be sticking out of it to push the switch when i shift, but i'm not sure. Can anyone help me with this?

(SOLVED)
Discovered I am completely missing a plastic pin, part #19-46-44. I am going to try and replace it with a bolt.