2012 Dodge Grand Caravan Voltage Wildly Fluctuates

Well, I installed a brand new battery this morning, and the problem just got worse. Now it’s not charging at all. Since I don’t relish the thought of changing an alternator in the driveway when it’s sleeting and snowing, I guess it’s off to the dealership tomorrow! On this particular vehicle, I think you have to disconnect the radiator hose which means draining out the coolant. Not a fun job in some freezing weather!