Would it be possible to reverse the wires that go to the can motors so when you go forward with the remote or app, the train will go in reverse? Specifically with the Santa Fe Lionchief FT Diesel, from the set, 6-84719. Wanted to put two of the FTs together in the normal "AA" fashion, but obviously one would be backwards so it would want to go in the opposite direction of the other. If it would work then they would both be controlled with the remote working correctly, even though one would be backwards.
My uneducated guess is that the electronics sees the remote going forward and just sends the signal to the motors to spin one way, then the other way when the remote is in reverse.
I know with the ERR upgrades, the manual states if the motor direction is not correct, just switch the wires.