I have a Lionel Command C-420 6-18587. I have it setup the same TMCC-->RS. The AUX 2 for lights and Smoke work correctly on that model. Of course It has different electronics than the CC...
I have tried setting TMCC-->RS and CAB1-->RS as well. Still no lights. I haven't tried Legacy or R100. AUX 2 Blows the horn. The lights flicker when I program the CC and press set. Other than that no lights.
I was reading to see if the feature set was possibly entered wrong and wanted to reset it and ended up more confused than I was last night.
Can the R4LC Board be the cause of the problem?