Also for those who are wondering coil split means literally you only have one coil from a humbucker. It's to try to get a single coil-ish sound.
Tapping, which I've never done, means you tap into the windings and reduce the output from the pickup. Like you wind the pickup, 5000 turns, then insert a wire out, and then continue winding to 10,000 or whatever turns, then you put in a mini switch, and you can go from a strong pickup, to a weak pick up, in an attempt to get a vintagey sound.
that's what you're trying to do right Heft?