Hi Larry,
Many thanks for your advice and your shared experience. I can tell regarding the past info posted, that the addressed connection is the so called "violet" wire . I reviewed some of the above information not all yet but I am certain that have the same card as yours, meaning its the same LCRU1 not sure yet about the sound card. The LCRU1 has indeed an option to connect to electric operating couplers that will should respond to TMCC commands from the CAB1 remote. My engine has the conventional magnetic couplers as believe is the standard, these are to operate over the UCS track section only.
In regard to the violet wire connection, I can see so far, that there are only three input wire lines going into the sound card ( I mean besides the two red and black from the stand -by 9v battery) these are the Red (AC-Hot) and the Black (AC ground), and the Violet. I mean, by default the Violet must be the data cable. The other cables are two and are the output to the speaker which are both Red. Then I think that if I interrupt the violet cable the sound card will only turn on and produce the RailSounds routine sounds, but would not get TMCC orders to make the RPM increase, decrease, the shutdown sequence, etc. not sure yet how the horn and bell really work. Well that is just an hypothesis from me, for now with my limited knowledge.
I heard from Lionel that they are moving their offices some where else and so will not attend any support demand until July 8th. This includes the support server, ordering parts, etc.
Well thanks again for sharing and for your time.
All the best
ARTURO
