The last mod on the page looks really cool to me. The middle pickup alone is replaced by the bridge & neck pickups in series. No new switches at all 
Hastings Mods from GuitarNuts site
With single coil pickups, bridge & neck in series gives you higher output and a nice beefy tone.
Chip

Hastings Mods from GuitarNuts site
With single coil pickups, bridge & neck in series gives you higher output and a nice beefy tone.
Chip