fatjoe10

In my personal case, a loose battery terminal will cause the car to shut off while driving. Also, no mention was made of the ground... how's the ground looking where it attaches to the firewall?

Car Analogy

On most cars, the alternator generates enough juice to run the engine, even at idle. Meaning you could drive the car with no batt and you're fine.

But with bikes, especially sport bikes, to reduce engine load they undersize the alternator, so it only produces enough juice to charge batt (and run engine) with some rpm's. I would not be surprised if S2K was more like bikes in this regard.

That would mean a dead batt would cause stall at idle. This seems supported by what others have said in this thread.

So it seems logical that new batt they did not tighten terminal enough, caused batt disconnect. That explains stall and radio code. When moved the connector it was enough to reconnect, and you were good enough to drive. Fix = tighten batt onnector properly.

fatjoe10

Running a car with a bad/no battery is an easy way to fry an alternator. Modern cars are a lot less tolerant to such things.