Which set of wires goes to the thermostat?

[BenjoshYo]

So my G3 is throwing me code P0597, anyone know which set of wires is going to the thermostat and how to check it?

[BenjoshYo]

Can anyone help?

[xintersecty]

In the picture above, the set on the left. Not the inlet but the ones going into the block. Here is a picture of the part:

More Information for ACDELCO 1581766