[21sprint]

The car will show a charge then drop off at any time warm or cold. I have changed the alternator and it never helped so I'm sure that was a waste of money. There is one heavy red wire running to the alternator hot post to Battery and 1 small red wire that plugs into the alternator. I'm not seeing and bad wires, so is this a big problem or just maybe a ground problem? Thanks for any ideas!