After I received the Kato Big Boy I realized my programing track was too short. I had to redo my programing track and it was go big or go home. It went from a short single track, to two longer tracks. A toggle switch select the track to program on and flashing LED's in the end stops to show the active programing track.
I used a DPDT switch, to control the DCC signal and the LED power, one side of the switch applies one of the DCC signals to the rails, the other side of the switches the applies the positive voltage to the Flashing LEDs. I almost went down a rabbit hole and was going to rectify the DCC signal for a LED power source. I went with a much simpler approach and soldered wires to the bottom of the PR4 where incoming power is applied. I also wired the flashing LEDs in series as they tend to stay in sync.
