I'm trying to get Miniatronics Point to Point Automatic Reversing Unit to work. The analog engine does run back and forth, but only if I keep manuallychanging directions. (It's supposed to automatically cause the engine to reverse directions when it goes over a light sensor installed between the ties at each end of the point to point section of track.) I'm using a Bachmann Spectrum power pack. It's as if the light sensing unit isn't even connected! Also, the instructions say that you can adjust the sensitivity by turning the knob for each sensor until the LED lights up - well, I tried adjusting both, and could not get either LED to light up, at full, one way or the other. Is it possible the included 12v transformer isn't producing enough juice to power the unit? I ask because I tried crossing the output wires, and barely could get a spark out of the thing!
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