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I believe you are refering to the electrical connection of the power pack to the track. In DC application you would like to have your trains running in the direction indicated by the direction switch on the power pack when the train is immediately in front of you. In DC power, this would be referred to as polarity of power. If this isn't happening you should remove the lockon and place it on the opposite side of the track to produce the correct operating direction. You can also reverse the polarity by swapping the wires as they connect to the lockon or on the power pack. <br /> <br />Ken, D&J Railroad, Stafford, VA
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