Spdt Toggle Coil Split Wiring Diagram. The switch is always making one of the two connections and flips between them. Solder the ground wire to the back of the volume pot.
Spdt center off switch you can choose series humbucker coil a coil b all with one switch the diagram on the right offers an interesting relatively easy to wire circuit that gives you three tone choices with just one switch. For the kill switch simply wire 1 to ground and 2 to the output wire that goes from the middle lug of the volume pot to the output jack. Bridge single coilmiddle 3.
I believe the diagram below captures your direction.
2 humbuckers1 single coil 1 volume1 tone5 way switch auto coil split in positions 2 4. They are the ones we need. Original bare knuckle pickup wiring diagrams. Its a clever way to send the three split wires to ground using a dpdt pushpull switch because thats the only kind they make without jumpering any of them together.