I took the car out for the 1st time after sitting all winter. Started running hot so brought her home. Pulled into the garage and it sputtered out. I went to start it again and it was dead, no sign of the starter, battery still had full charge. Thought it was a heat soak issue, but the car was still dead hours later. Starter bench test shows it is not the starter. No volts at the purple wire. Positive from the battery is brand new. Battery still has full charge now, even after constant diagnosis. What you suggest will be my next experiment. Thanks Tom.