To the best of my recollection there are only about for wires right? It's been about14 years since I put my 65 back together.....anyhow if it has four you can figure it out with an ohm meter.....put one meter probe on any lead with switch in run position,test other 3 leads ,switch and check until you have continuity from one to other two, make note,now hold switch to start position, you will only"make" contact from common ( hot ) to run, accessory and start ....experiment a little and you'll get it.....isn't there a stud in the center of the back of the switch?....I think that's your "hot".....conversation me if you need more help...
http://www.jalopyjournal.com/forum/media/1962-ford-ignition-switch-wiring.495152/ 62 and 66 used the same switch according to Advance Auto.
The Jalopy Journal
