also this is some pre wired harness styles from the same guy
http://home.earthlink.net/~tfntech/id28.html
also this is some pre wired harness styles from the same guy
http://home.earthlink.net/~tfntech/id28.html
This might be simpler. Swap the bridge and middle pickups on a 5-way switch. You get bass, bass and treble, treble, treble and middle and then middle.
Courtesy from Mark Hammer.