I have replaced my battery and the negative cable in my 116-20. If we let the car sit for 5 days the battery is fully drained. I have checked and can find no lights on nor a radio that mite be left on. What area should I be looking at. A mechanic shop hooked up there gauges and they claim that there is no draw on the battery. All I know is that it has a chager on it now so I know the NEW battery is dead.