N14 High Water Temp alarm issue

Hey folks, got a weird issue.

So my dash gauge shows all normal temps but my High Water Temp dash light and alarm are going off.

Plugged in cummins insite, code 144 Coolant Temperature Sensor Circuit

Recommended replacing the coolant sensor, replacing the pigtail and checking the wiring, I did all three of those things.

So before the high water temp light wouldnt go on until the dash gauge hit about 180 degrees.

Now, after doing the recommended repairs, when I turn on the ignition the light and alarm are going off immediately as the engine is cold.

I was so certain it was the wires because if you wiggled the wires near the pigtail, you could hear the engine noise change like it was changing parameters for a sudden temperature change, and now I'm just ####ing stumped.

Anyone have any recommendations or suggestions?

 

An update:

I guess theres 3 coolant sensors, and the one that goes to the idiot light inside the cab either has a faulty sensor or faulty wiring. I unplugged it. The ECM and dash are both reading proper temperatures still after unplugging the single wire sensor that goes to the idiot light. I'm going to check that particular harness and replace that sensor on my next day off but truck is running good now with no light or alarm.

To Goodysnap:

It's a 99 Kenworth T600 but this is not the original engine it came with. I don't know what this motor came out of. But the sensors and wiring are definitely different from the diagram I looked at showing how it is from the factory.