I HAVE A 1999 DEVILLE.I REPLACED THE ALTERNATOR BECAUSE IT WOULD CHARGE AT TIMES.AFTER REPLACEMENT IT WAS CHARGING AT 14.4 VOLTS.AFTER IT RAN FOR A WHILE IT THE VOLTAGE STARTED TO DROP.CHECK BATTERY AND CONNECTIONS.RETEST ALTERNATOR AND WAS NOT CHARGING.THIS IS DELCO ALTERNATOR.ANY HELP.