Dilly Dilly I just installed 4 Z-Stuff DZ-1070 and DZ-1075 Sensors on 2 side by side tracks and I couldn't get them to work. I contacted Dennis Zander from Z-Stuff (585-377-0925) and he walked me thru the hook-up and he stayed on the phone with me until I got it to work correctly. I installed the sensors to the MTH 30-11014 Crossing Signals W/Sound. Dennis is a really good guy and he helped me a lot. I did have to send one of the sensors back but he sent me a new one right away. I would call him in the morning when you can work with him on them.
Take care and good luck. Gary