I received my set of 4 (2 FA & 2 FB) Santa Fes from Nicholas Smith and everything is in good working order! They take their TMCC programming numbers and all. This is my first super bass B unit. The Lionel owners manual says you can command control a consist of these Alcos two ways: either same-engine-ID addressing (you program all 4 units to an identical TMCC number, I think) or Train-ID addressing (you program each unit with a unique TMCC number, then train build all those numbers together under one common train number to make up the consist, I think).
I never tried the first scenario before, so that's what I did, programmed them all, one at a time, with an identical TMCC number. They all took the number and ran together as a consist, but any units running in the consist which were physically in reverse had their read headlights on.
So then I went to my more familiar scenario of programming each unit with a unique TMCC number, they all took the numbers, I train-built them all together under one train number, and ran them in a consist, this time flawlessly, including no rear headlights within the consist ever coming on.
Hope some of you may find this feedback helpful.