hi all, wonder if i can pick your brains....sounds like something a fair few people have experienced before....blower fan in Xsara stuck on max - adjusting heat dial works, and direction dial also works, but unable to switch off or reduce airflow....it's on max, max, max, and only turns off when the engine does. I've read a little bit about the blower being under the glove box, and the likely culprit being a resistor....can anyone give me further instructions, pictures etc....please!