This was also posted on the Lionel TMCC & Legacy Forum.
I recently prurchased a new Legacy remote and Cab 2 to add to my DCS layout. Previously I had a command base and was able to run TMCC engines with the DCS or Cab 1 remote. I hooked up the Legacy base following the schematic on page 124 of Barry's book (2nd edition) replacing the #50-1018 cable with the #50-1032 cable. I am able to run TMCC engines with the Cab 1 or Cab 2 remotes but not with the DCS remote. I do not have any problem controlling my DCS engines, switches and accessories using the DCS remote. I have checked the programming numbers of the TMCC engines and they correspond exactly to the numbers in the DCS remote. Any suggestions as to solving my problem?