Re: wiring for out of phase
All you need to do is reverse the phase on one PU, it doesn't matter which one. Doesn't have to be a volume pot either, you can have a tone pot push-pull for phase. Phase involves only hot and ground, so a 4-lead wire isn't needed. The Jimmy Page system has the volume pots for coil cut, and the bridge tone pot for phase. By using both at the same time, this set up also lets you switch which bridge coil is active during coil cut (screw or coil).