I am trying to wire the block signal to remain green with no train beside block signal. I want the light to turn red when a train passes. I cut one of the outside rails to isolate it and attached the red wire. The yellow wire is hooked up to accessory power 14 v. The green wire is hooked up to the opposite side outside rail. Both outside rails are common ground. When the train passes the red light comes on but the green light stays on also. How can I wire this so that the green wire will go out?? I have 3 of these block signals, one for each loop of track. Appreciate any ideas and help. The wiring diagram is for the use of a 153 switch and I don't want to use that.
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