Re: 4-wire pickup issue with splitting the coils
Definately measure with a multimeter to make sure you are getting about half the resistance in the split modes.
But you will get magnetic coupling. If you connect to one coil only, and tap the other one, you will get a sound because they are all within the same magnetic field. Its normal, but the connected coil will be stronger and you will still get a more single coil sound.
1 x 12 Vintage 30 cab
'76 Shergold Masquerader
'91 Les Paul Studio
'10 American Special Strat HSS