I have apart right now and I can garuntee it will not run in reverse. The first thing in the curcuit is a diode.
If your wondering why its apart it because I'm trying to figure out how maintain a 12v signal on the RPM line because MBM5 shows 0 rpm once i get below a certain voltage when a turn my fans down through my rheobus. So if you knwo how to mod the fan tell me. Thanks.
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