The Magnetic Field We Observe On Earth Originates From the Sun
The Sun is the source of the magnetic field we feel on Earth. The field from the North pole of the Sun oscillates through the Solar System forming giant donut rings of ever increasing size but lower strength, the further we are from the Sun. It is this magnetic field that determines the placement of the planets.
It is the motion of the Solar System through the magnetic field of the galaxy that drives the motion of the planets. And in turn it is the motion of the planets through the Sun’s magnetic field that drives the rotation of the planets.
The above diagram shows a simplistic illustration of the Sun’s magnetic field across the Solar System. Of course if we are in a binary star system, there are in fact 2 main magnetic field sources influencing the planets. As the planets are all much closer to the Sun, it is the Sun that provides the dominant magnetic and gravitational field. However the second source (the Black Sun) provides a constant and perhaps predictable disturbance to what would otherwise be a very stable system.
As our Solar System approaches periapsis with the Black Sun, the disturbances to planets is so severe that a crustal displacement or pole shift can occur.