Does anyone have experience wiring a ambient sensor to the ecu? I bought a 08 528i the car had small front end damage. The front bumper needed to be replaced. Im assuming during the accident the ambient sensor was pulled off and the wiring is gone. I bought the car fixed already, but my mechanic was telling me the wiring is gone and my ac is not working. He claims he has to wire it to the ecu. Was wondering if this is a difficult task.