granada scorpio problem

[moogman]

i have a granada scorpio 2.9lt auto that has just passed its mot,but it keeps flattening the battery over night.i have'nt left any lights on and when i switch off the engine i can hear what sounds like a blowing noise coming from behind the dash,although the heater is not on or the air con. what could be flattening the battery?its a pain as i have to disconnect the battery every night as i start work at 6.any ideas??

[manutd2465]

My mother in law had exactly the same problem with exactly the same type of car, she took it to the garage, turned out to be something to do with the wiring!!!