68 Mustang ignition switch wires

I am rewiring my 68 mustang. I have been around and around the internet and schematics trying to figure out my ignition switch wiring. The more I look the more I confuse myself. I am new to working on cars so confusing myself isn't to hard.

Coming out of my ignition switch I have the following wires. Can any of you tell me where they go. Here is what I have:

Pin A is a Black with Green stripe
Pin B is a yellow wire.
Pin C is 2 wires. 1 is Pink the other is Green with Red stripe
Pin S is Red with a blue stripe
Pin PO looks like it is purple or violet
Pin PO - is blank

I have a general idea where some go. I am really unsure about the PO wire

Thanks for any help in advance.