[hcarry]

The intent would not to be to place the circuit between a speed controller and a motor. Rather, it would only reverse the effective battery polarity to a motor. Our intent is to build a telescopic arm to hook the bar so we can winch ourselves up. In order to do so, I need to spin a motor in one direction to extend and then reverse the polarity to retract it. The motor wouldn't even be connected to a speed controller. In this case, if the answer is still NO, can this functionality be accomplished with simple 12V relays?