Going out on a limb and gonna say that rogue connector is for the hood ajar switch. If those wires are brown and brown/red that's your guy. Not sure why its showing 8v across the circuit though so perhaps that is why it's disconnected. How are you measuring it and what is the resistance to the chassis when you test it to the ground lug where all the brown wires on the driver side inner fender bolt to? Make sure you have a good, clean ground when you test it.

Good luck