wiring harness behind grill

So i changed out my grill the other day on my 06 double cab and noticed a wiring harness that was just hanging there behind the grill, right next to what i believe is the horn. does anyone have any idea what this could be? i can try and post some pictures if needed after i get off work. this was previously my dads truck and i bought it from him and he said he doesnt know what it could be.

 

^this.

 

i dont have a temp guage inside anywhere, so im guessing they just added the harness in factory anyways?

 

There is a temp sensor mounted on the center support in front of the grille, do not remove it! The temp sensor is connected to the engine management system and not to a physical temp readout in the truck. The sensor connects to the canbus network and must remain.

Even back before 2014 the sensor was the same whether you had a temp display or not. The mirror grabbed it's info from Canbus.