FAT-HSS(c) TONE CHART
NOTCH NAME (across)
Normal  (10)
Neck on with Bridge  (9)
Mid-Series-Neck  (8)
5-way (down)      
(1) neck
n
n
n
(2) middle+neck
m+n
m+n
n
(3) middle
m
m
M*N
(4) bridge + middle
b+m
B+M+N
B+(M*N)
(5) bridge
b
B+N
b

This switch was designed for HSS Strats with a non-splitable humbucker in the bridge.
The FAT-O-Caster (c)   changes the way the pickups are wired into the circuit.
The NAMES of the NOTCHES describe HOW the pickups are wired...

KEY:
+ = wired parallel
* = wired in series
lower case letters = "stock" HSS Strat tones
UPPER CASE BOLD  = new FAT-HSS (c) tones