I consider points a switc0h. Open, close, on, off. Ignition switch on, ign switch off. Logic tells me my previous post is a possible scenario and every electrical circuit in the truck is available when the key is on.. I don't know whether or not Pertronix would or could respond similarly. How repeatable is this condition? Now that it's sat for a while will it do it before starting the engine or does it have to be run for a while. Will it do it after sitting for ten minutes or a half hour? Will it do it a second time, turning the key on and off immediately after it does it?