"always ensure that you enter the command bases's location as TIU #1"
That is not an option you get to enter if you have only one TIU. I can't say if that's true if you have more than one, but I know if you have only one, you have no choice. If it comes up as TIU 2 and you only have one and your TIU is TIU 1 (one blink), you must do a complete factory reset of the TIU and the Remote before attempting to add the TMCC engine to make sure the engine is added to the TIU number you have.
Now I have to order a new cable. Not saying it's going to work, but to have a chance that is my last hope. As I said early on in this thread, my lash-up did start with the cable I have and then died and would never start again. I feel the cable blew itself out with the very first start, which is where things usually go bad with electrical stuff. I don't know what's in the little black box in the cable. Probably a diode or a resistor. When we made our own cables back in the day, I think is was a 1N4001 diode.
