I have put in an aftermarket stereo into my car. (Pioneer DEH-4500BT).
I hooked it all up ok and it was all working. However i noticed that it did not turn off with the engine.
Before i had brought it i had read up about changing stereos so i knew what this was.
I got a friend of mine to wire the Cigarette lighter to the "Switched 12v".
Now it turns on and off with the car.
However, when i turn off the car and leave it for about 30 minutes, the radio stations that i have saved disappear.
Is there any way to fix this?
The car is a Citroen C3 - 1.1i Petrol - 2004 (04).
PS. My friend is a Car Electrical Specialist, but has gone on holiday for a month today!! He also checked correctly which one was permanent live and which was switched live.