Lionel legacy ID

RJ, I recommend you give each A unit it own engine number then make a train out of the two.  This will ensure directional lighting, couplers, and smoke work appropriately.  Please provide the Lionel model number to your set. 

https://ogrforum.com/...0#141497117513230840  the id# is 6-38573 

I assigned the dummy its own number only to lash them up and see the same results

Looks like a little bit of discrepancy between programming both the same engine, programming them different, or programming to the same number at the same time.  Take a read through this search I created and takes some tries at what other did in the past until you get success:

OGR Seach on Shark Programming