The Bosch spoke magnet simply screws and locks onto the spoke of the your wheel. In order for your speedometer and system to operate correctly the magnet must be aligned correctly on the spoke to ensure it passes in front the the Bosch speed sensor.
Located on the speed sensor is a vertical line where the Bosch spoke magnet must pass directly in front of (see image). Failure to align the spoke magnet correctly will prevent the system from displaying your speed and or prevent your Bosch powered Ebike from working correctly.
