MC 9 wiring question

[Kwajdiver]

It's the Electronic Control for the tranny, doesn't have to be a DDEC.

That's what mine is.

Bill

[JackConrad]

I'm working on the ATEC system.  MCI-9 1983.

What's ATEC?  Not one I'm familiar with. Is this the electronic controls for the automatic transmission on a DDEC engine?

Allison Transmission Electronic Control   (I think!) Jack

[Sammy]

ATEC transmissions were used with Non-DDEC engines too.
We just cannot get the correct schematic diagram for his bus at this time.
Trying to work without it, using other bus applications as examples, Allison ATEC info, and with Bill confirming or denying connection points. Takes longer, but seems to be making some progress.