The plug is p/n 377936-S, used without the 3 speed manual transmission (aka used with AT and 4 speed), is the same one used on each end of the 64-66 cowl for an access hole. The top is visible along side the fender. I have no referenced drawing.
The clip for the 4 speed speedometer cable is 373842-S100, documented in the "Ford Standard and Utility Parts Catalog, Jan 65 pg 33 (and July 66 pg 33). It is sold by AMK but is not completely correct. The original "butterfly clip" is dipped in a yellowish adhesive sealer, the current one has a foam sealer.
Jim