Thanks Armito. You were correct it was in position 2, I used the flashlight trick to verify. My radio is still working, so I assume that means it is hooked up properly. Still need to install the BT antenna and do the coding. Difficult to find the time when I get home from work and it's already dark and I don't have a garage to work in. Hopefully this weekend.
Did your TCU also not have a plug for the blue cable?