That was from this thread.
https://www.stovebolt.com/ubbthread...o-spark-then-no-starter.html#Post1521739Page six has a picture of the points.
I cannot categorically state that the key was not left on. It was stored in the house away from the truck while the truck was parked.
It isn't outside the realm of possibility that it was left on during attempts to start the truck but I don't think so.