Making sure the the Rhythm switch is installed in the correct orientation (See Diagram) Solder Your Neck Pickup's "Hot" also known as "+" on the diagram to the Middle right open Lug on the rhythm switch

Next, Solder the Bridge Pickup's "hot" known as "+" on the diagram to the right "open" side of the toggle switch.

Solder the both the Neck and Bridge's Pickup ground also known as "-" on the diagram to the casing on any pot. In this example it was the lead Volume as it was the closest to the wires.

Solder the Tailpeice Ground(s) to the casing of any pot. On this example the Lead tone was the easiest. If you have Shielded your cavity. Add a jumper wire from the Shielding itself to the wiring harness. Solder the wire to a pot casing just like how we did it with the tailpeice ground wire.