Joined: Sep 2012
Location: Sydney Australia
The 64 Comet and Falcon shop manual does not have any schematics on what you are after, nor does the 65 Comet, Falcon, Fairlane and Mustang shop manual.
They both just have basic fuse block diagrams.
The web has plenty of schematics online available, just make sure that you get the 64 schematics.
Me personally, I would not have purchased a wiring kit as such, then you would be on your own if there was an issue down the track.
I would rather replace one wire at a time.
15/5/1964 260 Manual Coupe.
23/3/1965 289 Manual Fastback.