Does anyone know where I can find a diagram showing what each terminal is for on an ignition switch? I know what a couple of the terminals are for, but not sure on the rest. Any help is greatly appreciated. Thanks.

Bill

 

Check here for starters, and ignition wiring.
Good luck
http://www.autozone.com/servlet/UiBr...3d800ce982.jsp

 

That won't help. I have an ignition switch from a 78-79 with no wiring pigtail. Need to find out what all the terminals are for based on how they are labeled. Thanks though.

 

he means this.

The Switch pin-out.
It goes by Vin # for whether it is a 77 or mid-78 +

The switches changed design in mid -1978...



this one pictured below is for the later design.(the one on the right above)

 

Mil1ion - So here's the deal. I am installing a Painless 18 circuit harness in my 77 F250 and am trying to figure out which wires to install where on the switch. I have 2 battery wires which I will obviously put on the battery terminals. I will put the switched accesories on one of the ACC terminals. What about my coil wires? I installed a HEI style distributor. And what about the wire that goes from the ignition switch to the "S" terminal on the relay? Should I put that one on the ST terminal on the ignition switch?