Need some electrical help with my ‘68 Plymouth Valiant 100

A good list of the the Master Tech Conference Materials.
https://www.web.imperialclub.info/Repair/Lit/Master/index.htmGo here first because the list is descriptive.

Once you know whatyou're looking for (year and session)
An alternative source of the booklets and filmstrips in pdf and youtube formats
www.mymopar.com -> Master Tech