Have you seen this video a guy posted a lil over a year ago.:
https://youtu.be/Vkk_fM-QHns He feels your pain. There is literally zero video support for these old trucks when it comes to factory steering columns. Only a bunch of Ididit stuff. Look in the comment section as there is a person who left a remark that you might be able to visualize better than I can with my simple floor shifter column. HTH.