The winding direction, magnet polarity and hookup can be different from guitar to guitar even with the same brand or model. Most companies that make humbuckers usually wind the coils in the same direction, use the same magnetic polarity and are hooked up the same. Often when you want to replace a pickup in your instrument and you find out that the pickups are out of phase. I’m sure some large companies get upset with all the after market products but it sure helps sell their products. I enjoy my Jeep 4-wheel drive and often look for after market accessories to customize it.