Trouble with a switch, people forget about it. Seen a Champ rider remember right in the middle of a section when his bike over heated.
We also have an old vac truck at work and everbody forgets to flip the switch after its started. Humans always make silly I forgots all the time. My wife's friend has sunk her ski boat about 13 times!
What plug?!?
You guys must have bad luck to be so worried about such a simple thing. I have replaced one fan in all my years, in my own bikes. Which I have had over 100. I have never needed any electric part besides points, condensor, plug and cap.
Now I have had to replace other peoples stuff. Most of the time it was self induced.