Mechanical failure in the wiring harness, caused smoke to come out of vents (melted wires). No evidence of rodent damage. Safety was put at risk, immediately dialed 911. As a result several electrical features do not work. Air/AC/heater, power windows nor headlights. Two mechanics & insurance claims representive deemed it "mechanical" failure despite the vehicle being inspected two months prior. Only symptoms that occurred prior were a fused being tripped; interior lights and radio didn't work when this happened.