It looks like they have 3 wiring options. Series, parallel and cut coil. I'd like to take advantage of all 3. Would I need to add 2 3way switches ? Is there a better way to achieve full function?
You can do it with one switch. Look for wiring diagrams featuring a "DPDT on-on-on" switch. This type of switch has 3 positions and can be wired for series - split - parallel. I've got a Bart wired like this in my Ibanez GWB35
you mean Bart 2J Squared pickups? The options are the same as Bart Dual Coil pickups, but with a difference that all positions are hum-canceling with the 2J Squared, whereas with Dual Coil, some positions are true single coil (thus with humming possibilities). Options for each 2J Squared pickup with an on-off-on SPDT switch are: inline split coil close to neck series of the 2 inline split coils inline split coil close to bridge options for a pair of 2J Squared pickups with an on-off-on DPDT switch are: outer inline split coils all inline split coils are on, with each 2 inline split coils are wired in series inner inline split coils options for each 2J Squared pickup with an on-on SPDT switch or a push-pull potentiometer (use two switches or two push-pull pots for a pair of pickups) are: all inline split coils are on, with each 2 inline split coils are wired in series outer inline split coils options for each of 2J Squared pickup with an on-on-on DPTT switch (use two switches for a pair of pickups) are: all inline split coils are on, with each 2 inline split coils are wired in series outer inline split coils all inline split coils are on, with each 2 inline split coils are wired in parallel