my car battery died i jump started it,it died again i had the baterry tested it came back as defective,i replaced the battery,it was still only putting out about 12.85 volts then with the headlights and heater blower on battery died,i replaced the external voltage regulator,assuring this would fix the issue,i drove the car with the headlights on and the blower motor sure enough the battery died,im clueless now,its got a new battery and external voltage regulator.i drove the car for 30 mins then let it idle with nothing on for 15 mins,i then drove off with the headlights on and blower motor for heater the engine of course stalled on me,im lost i have a new battery and voltage regulator,there is so many wire leads under the hood mostly near the battery,is there something im missing along the line that is causing a non charging condition.is it possible that the internal components in the alternator may have something to do with it.what am i missing should i check all the wire leads down to the starter to make sure there tight,what else is involved in this charging system,please any help will be greatly appreciated,im so lost,mercees charging systems are nothing like general motors.i need allot of help anyone please give me your input,please.marc