I don't know anything about Lionel's Cab1, but I found this on there web site:
https://www.lionelsupport.com/media/servicedocuments/70-0000-000.pdf
It might help you out, unless you already have this.
Mike.
My You Tube
I have used the Cab 1 in the past and I am trying to use it once again. I have several command equipped locos that I have been unable to link to. I put the power on and the engine's light comes on but does not respond to the Cab 1. In fact, the light does not blink at all. However, when not using the Cab 1 the light blinks several times indicating that it is looking for a signal.
I have tried different transformers and even different track and nothing works.
Any suggestions would be much appreciated.
Jim
Jim Newell