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Originally Posted by Joe Ross
Have you verified this? Even before I searched for the answer, I had a hard time beleiving that the spikes could out put 3 states (forward, off, reverse) from one signal wire.
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How it was explained to me by john an ifi guy in nj is that the red is normally high, when it is high plus white is high, it goes one way. when it is brought low but white is put high it goes the other way. when just red is high it stays neutral.