Here’s an update folks. After checking out all of the cool sensor options mentioned above, I decided to purchase a Lionel 153IR sensor/relay from my local model train store (which in this day of EBay and other on-line retail, needs all the help we can offer). I installed it on my layout yesterday and wired it to one side of my 450 signal bridge and, voila, the signal lights now work as intended! I especially like the timing adjustment on the 153IR that controls the lag time before the relay shifts power from the red signal light back to the green one (from ‘NO’ back to ‘NC’).
Had a little bit of a learning curve, as I assumed initially that the Common (-) post on the signal bridge should be connected to the Ground output terminal on the 153IR. But after a little research on this forum, I found a wiring diagram that showed the Common post on the signal bridge connects to the ‘hot’ (ACC Pwr) output on the 153IR. So, I switched that wire from ground to power output and, Bingo, instant satisfaction, followed by hours of marveling at how great it is to have my first fully automated accessory on my layout.
Now I’m going to grab another 153IR to control the other signal on the 450, and maybe a couple more for other accessories!
Happy as a clam in a ‘no shellfish harvest’ zone. So, many thanks, again, for your help.
Ken
