Ok. So normally when the car is off and the key is out the rpm guage hanges out somewhere in the mid rpm range... i am having my system installed and they said the battery died so im like ok.. i get in the car and the rpm needle is in the redline area and we put a jump box on it but apparently the battery is so dead that not even the jump box could jump it.. anyway just wondering what would cause the needle to be stuck that high in the rpms.. thanks