My first question, as always, is did you contact Miniatronics with your question? Since they still seem to show the unit, or a cousin, on their website, I would think that they might have someone there to help you.
Secondly, I think this is not an automatic reversing unit in the sense we normally think here, which would be for a loop of some kind. My impression is that this is more a device that makes a train stop at the end of the line, and then reverse itself to go backwards. Is that correct?
And finally, from the little information they have on the website, it appears to me that the power supply they give with the unit is to power the unit itself and has nothing to do with track power. Is that also correct?