New owner of 1999 Galaxy Ghia x 1.9 tdi. has a few faults which I have no problem in dealing with except for one, which is the climatronic control panel ambient air reading shows -- deg C. All other readings and operation of the panel are functioning as expected, assuming that this reading comes from a sensor I suspect the sensor to be faulty, Enquiries at Ford main spares and an online sensor supplier for a replacement result in the response that there is no sensor for ambient air in their database for my vehicle, so where does the climatronic get the reading from.? Obviously no reading without relevant sensor so where is the sensor located, looked under the grills but nothing found except that three pairs of wires appear to have been chopped off near the horn position (the front fog lamps appear to have been removed accounts for one pair of wires, the horn has been rewired to bypass a fault within that system which accounts for another pair, so maybe it's the third pair that should be connected to a sensor?) I understand that this is probably a VW component. So if anyone has a solution to tracing the missing sensor and getting a reading on my climatronic, I would be grateful.