I've just taken out the standard Blaupunkt Cd player from my Astra F GSi and have installed a Sony Cd player. It's plugged in no problem, however there appears to be no continuous power supply to the head unit. Every time I leave the car and come back and switch on the memory is reset.
Does anybody know which colour wire is the Cont. power supply wire on my head unit and which one is the car's? I no longer have the Sony instruction booklet.