Originally Posted by JohnH
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.
The resistance is pretty much spot on....16.2k across both coils in series...8.1k individually. And I think you are right....it appears that the unconnected coil is simply within the active field. Probably a function of the pickup itself...the Seymour Duncan hotrails is a small package with a lot of wire...lot of field across two rails that site about a centimeter apart.
I think all is cool...just need to wire it up and see what it sounds like in the guitar, and not worry about meter readings on my bench