rotor has permanent magnets both north and south face unlike most that have all poles the same. the reed switch has to be assemble yourself. use a metal door hindge and glue a magnet on each side with north and south on each side. have two conductors that are not permeable (like copper) on each side of switch (door hindge). when the south magnet passes by, the switch connects one way then connects the oppositeway whrn north passes. place field coils on opposite sides of rotor and make sure the same pole of both coils faces the rotor and position reed switch to where the magnets are directly in front of coils when the reed switches and are same poles with the active coil. hope that's clear enough.
