t444e wiring

[sliepner93]

Hey guys,
first post here and a shot in the dark to say the least. I recently picked up the front half of a UPS truck as a donor to my project truck. It has a T-444e and a 6 speed Allison 2400. Unfortunately I do not know the vin or have the ability to obtain it. The crux of my problem is that the connector going into the firewall was de pinned. Therefore I have no idea what any of these wires do and what I can go without. I want to make it as rudimentary and simple as possible. I am putting it into a 62 f600 cab and clip on an Asplund 4wd converted chipper truck frame. That being said, the less wiring the better. In my head the easiest way to obtain any wiring schematic is to figure out how to supply power externally to the ecm and then plug into the ecm and read the stored vin. I just need to figure out what wires are required for It to function. If someone out there makes a "stand alone" harness for it that would be even better. The engine serial is 1562047 and I believe it is a 2001 year model or so. Any wiring diagrams or stand alone harness builders help.