Yes, with a clue of what they were for, I could look at the 107 manuals I have on CD-ROM that cover all the years. Unfortunately, for '72 and '73 the diagrams don't have the cool "Component Locations" list that the later diagrams do. Still, knowing where the same connector is on a '74 might help you. I'd be happy to have a look because I had to post a similar query last week even with the CD-ROM.