If I was driving at night, and the engine was hot, so all my fans, both pushers and puller were running, and the head lights are on, and I stop the car and turn the engine off, so my fans and head lights are still drawing current from the battery, and then I reach down and push in the cigar lighter, I think that would be enough to blow the circuit breaker. I would instantly know that pushing the cigar lighter tilted the scale, so I would pull it back out and, after a few seconds, the circuit breaker would automatically reset and my fans and lights would come back on. Since it's dark outside, and I left my flashlight at home, that would be better than a manual reset. How's that sound?