Not the distributer it’s self but the pick up coil inside the distributer , in other words does power start at the pick up coil , then to the ignition module , then to ignition coil primary and secondary, where it’s controlled by ground switch correct ?
If we're talking about SYSTEM VOLTAGE from the battery/alternator, it's switched by the ignition switch, delivered through the vehicle wire harness to the ignition COIL, and splits-off from the coil to the IGNITION MODULE in the distributor.
The pickup coil never sees SYSTEM VOLTAGE from the battery/alternator.
The pickup coil generates it's own AC power based on the magnet on the distributor mainshaft being near to the coil of wire in the pickup coil assembly, and the motion of the mainshaft specifically the inner and outer "teeth" that align and misalign as the mainshaft spins. This is the base spark-timing signal delivered to the ignition module. Below 400 RPM, the pickup coil signal directly triggers the spark via the ignition module which grounds the system voltage at the coil to cause current flow (amperage) and thus the ignition coil's magnetic field; and then the module un-grounds the system voltage at the ignition coil to cause magnetic field collapse, and thus sparks. Above 400 RPM, the ignition module sends the processed pickup coil signal to the computer, which adjusts timing advance, then sends the more-processed signal back to the module which grounds and un-grounds the ignition coil to cause sparks.