Michael I forgot to add the allison TCM has an input for the low range signal. That is why I am not to worried about it. I can use the 4x4 indicator circuit from the 205 linkage.
The main imput I have to figue out is the output shaft speed. That 119 tooth ABS ring is 3 teeth short of the number I need. But I don't think it is that much of a problem. I'll be sending a PM to a guy on TDR soon and confirming it.