Fitted my Alpine CD player to my XR2, all went well and everything works. However, when i turn the car off and come back to it, i have to manually turn the cd player back on and the head unit has reset itself. But if i turn the ignition off once it alls set and turn it back on straight away it doesnt do it? So why is it doing it when left? Ive got the ignition, earth and live all wired up.. Anyone?