Hi, I have looked for this topic and did not find anything similar, sorry if I missed it. I have the Lionel KCS ES44 6-28399, and the ground lights are not responding to any command. They remain on at any speed step and do not respond to the Legacy remote keys to turn off. I have tried lash ups, aux 2, and all other lighting functions work as per the instructions, just not the ground lights, they are always on. All other functions on the engine work exactly as designed, smoke, fans, cab lights, number boards, R17, everything except ground lights.
I have taken the deicast ES44’s apart before and for obvious reasons prefer not to take this one apart unless absolutely necessary, such as replacing a bad board. Question is, which board drives the ground lights?
I have not followed the wires to the board, as with above, taking apart is the last option for me (much care needed in reassemble). Based on a search on the Lionel parts site, the only board not available is the RCDR board (radio receiver).
Thank you for any insights as to which board needs to be replaced before I take apart.
Jim
