Further to my previous post "'99T Vectra Di rear fog lamps draining battery", after the battery was recharged, the standard (Philips Car 400) stereo won't work. I cant tell if it's even switched on. Press the on/off button and the display shows 00.00 top left (time?) then the temperature (which works) and below this "SAFE". Press on/off again and SAFE is replaced by 01.01.1997. I'd appreciate some help with this please tyke