with no sensor wire attached its the motor connections that determine rotation direction
when we use senseless motors in aeroplanes quite often the 3 motor wires are unmarked so its a guessing situation when connecting for the first try if the motor runs backwards you just swap any of the two motor wires round to reverse rotation of motor
with sensored motors the speedo/motor has to be in the correction connection to work properly (some speedos do have the ability to reverse direction in settingsas well )
dave
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