@Vernon Barry posted:I'm not sure you read what I posted:
Option1- even if you build them yourself and "save money" most flasher circuits are PER crossing light, so if you have 10 you need to build 10 copies, or again say you want to replace ALL of the 154C contactors- you have to build that many copies of the circuit. This is death by 100 papercuts
Option 2- buy 1 each $25 high current flasher, connect ALL of your entire layout and all 154 crossing lights to this flasher using a 2 wire bus, Trigger each of the 154 Postwar style 3 terminal lights using insulated rail as the simple trigger.
I read the description in the original post, but couldn't visualize it just from the text. Adding the diagram explains it for me. I agree - it does look like an economical solution considering the amount of current that device can handle.