Hey y'all. I was just fooling around with some of the consists, and noticed that when I turn on the banking Comm in the BR 155 (both DB and PRESS Version), the game immediately hard crashes to the desktop.
I don't see any option to do Banking comms, and based on my research and the links below, you won't even be able to do double-heading with two 155's Tsw: Step Up With The Db Br 155! | Dovetail Games Forums TSW: Step Up with the DB BR 155!
I figured it out now. So to use the 155 as a Double Traction you have to Set the reverser in both Locos to forward and turn on the Cooling Fans in the trailing Unit. Then turn on the Banking Comm on the GSM-R in the Leading Unit and then it works. And you have a functioning Double Traction of BR 155's
Silly me, I was looking at it and expecting it to be a different button. I started up in Free Roam and spawned a 155+25 hopper consist, and a single 155, coupled them up and I just made sure the trailing loco had its brakes turned off and turned the banking comms on the lead never touched the cooling fan on either loco and I could see the trailing loco reverser move and the throttle when using #3 chase cam. It took off like Jack Rabbit almost. I even looked at the wheels and could see the wheel slip and some parks from it as I slammed into full throttle at a dead stop. Old Doig learns new tricks. I always knew this to be "on/off" With lights off you can barely see it and at night it's even harder.