I have a custom A-B-B-A set that I put together from two A-B-A sets, removing both dummy A units and leaving myself with two Powered As and two dummy Bs. While retaining PS1, I had the motor leads reversed on the trailing A unit so it would keep sequence with the lead A. The lead a would control either or both B units and the trailing A was stand alone. I would hope to retain the same sveneraio with TMCC.
The custom set had the following changes to the couplers:
A -front coil, rear fix, tether signal pass
B -both fix, tether signal pass
B -front fix, rear coil
A -rear coil, front coil
...This allows me to run either stand alone A, an AB, an ABB, an ABA, or ABBA configuration without losing coil couplers.
I would imagine I would have to dial both A units as a lash up, which is no problem; however, if I ever run these TMCC converted locos in conventional, isn't the trailing unit going to start in forward and pull against the lead A?? Can I wire it up so that it always goes backwards like I did with PS1?
Any tips?
*please don't disparage or flag me for this post. I wasn't sure which topic to put under as it a TMCC related, but the engines are old MTH. The question has to do with TMCC. Thanks.