I have my GT hooked up to a CTEK MXS 5.0 and up until recently it's been fine keeping the battery in good health. I checked on it last night and all I get is a flashing green light when it's switched on which iirc means there is no connection between the battery and the charger. It's always been plugged into the cigarette lighter in the boot and worked fine before. I've tested the charger on another car and it works as it should. Is it worth buying another comfort connector from CTEK so I can hook it straight up to the battery and ignore trying to charge via the cigarette lighter? And what would cause the boot's cigarette connector to just not want to play ball?