so i have my fox stored for winter in my garage and i would regularly start it up every little while. i recently got lazy and let it sit for too long without starting it and the battery died and didnt start the car. jump start worked fine but now i have to jump start it every time... what to do????? and i recently installed a new stereo, it worked fine up until this battery issue, now it just doesnt turn on at all even when the car is running, how do i fix this??