Hello all. I am a newbie to this board and to guitar building. I do have a 42 year career as an electrician specializing in controls so I know my way around wiring diagrams and circuits. I am at the end of my first build, a single cut Junior sporting a Korina body, a Cherry neck with a Purpleheart fret board. On Seymour Duncan Antiquity P-90 and a twist. A Lollar Charlie Christian neck pup. While trying to figure out what components I want to use and which wiring scheme I got to thinking what would happen if you kept the (-) separate from the ground and the shield throughout ? Then it dawned on me that wouldn't matter because it would get grounded at the output jack, right. Then I thought, well what happens when you switch a pick up out of phase. You are just reversing the winding, right? Which brings me to my question. Is there an actual right and wrong way to wire a pick up? Other then one wire has more windings on the outside of the coil and the other has more on the inside of the coil, Is there a difference in sound or tone depending which side you ground?