2011 Freightliner Cascadia DD15 SPN 3250

Truck came in with red light at times and code SPN 3250 FMI 3. I installed a new sensor and now it is worse. Getting SPN 3250 with several FMI codes (I think FMI 16 was the cutting off code). Engine is shutting off because it now sees the temp as 1823 degrees which it is not. I can unplug the sensor and it goes to zero. As soon as I plug it in it goes to 1823. I don't see any rubbed through wiring near the sensor up to on top of the transmission. Did not have time to go any further than that. Any thoughts? It does what I would call a one box on it but rather this set up (pic attached).

 

Does anyone have a schematic or one of these harnesses laying around that can tell me which pins go to the blue plug? It is a two wire connection to the temperature sensor but I am getting hits on three spots out of the harness.