2000 Century DT 60 series "Engine controller no response"

I am having a similar problem. I noticed the green& orange wires were shorted and a bit loose. A few times I shakes them , the engine started. After a while they are no longer responding.
I bought a new harness and after hours of replacing and checking ....sadly didn't work.

I noticed in the fuse box there is no power in the side of the 4 main red wires that turn the doom light ...any suggestion is appreciated

 

Update..

I opened the ECM and found the battery melted, + a transistors 102 went bad too ..
I replaced them and now I have the active fault code 128s254o7 and a yellow check engine blinking.
I also found the turbo sensor harness wires meted as well..

 

I have more or less the same problem! Speedometer Rpms temp volt oil pressure gauges stop working and it has the same code! Century 06 14L

 

What did your problem turn out to be?