[Tony Radford]

Wife and I went on a hour or so long cruise today. Before we got back to the house, she died while cruising 45 mph down the road. Died like I'd turned off the ignition. I turned the key off and back on and she fired back up for a few seconds and then died for good. Had her towed home and pulled the battery. It was dead as a doornail, but checks out fine. I'm running a one-wire GM style alternator with internal regulator. I'm presuming it's probably not serviceable. Alternator is not very old. Sound like a likely scenario?