Can you ID these underdash connections?

i came across these links and saved them ,,maybe it will help

Wiring & Vacuum Diagrams - Mustang tech and info links

Ford Mustang 1964 Thru 1973 Automotive Repair Manual - Part II

Hey Poppy, my 65 has the Decor Interior options, (not factory GT) and I had the original "later" wiring installed by Ford for fog lamps and rally pac. The pig tails/bullet, three bullet connectors that I found taped up around the dash harnessing behind the instrument 5 gauge cluster were there for "the optional accessories". I think it is the same coloring code for the 66. 1965 diagrams illustrate white, #95 color code, is a ground for a 1 speed windshield wiper switch which runs and connects to the one speed wiper motor and is spliced to ground. The same is for a two speed wiper motor and 2 speed wiper switch, (which I have in the decor /GT group), white #58, and I think is spliced to #57, black and goes to ground on the dash. Your black/blue is #53, comes out directly from the light switch to your courtesy lights, (four courtesy lights)? Does this help a bit?