This is more of a greasy spoon post, isn't it?
1. What we do to wire up an old truck is electrical, not electronics.
2. Always "download" things from the internet at your own risk. Especially when reported to be an unknown source for this had written document.
3. This person was not a trained scientist or electronic or electrical engineer. He was a "publisher", a writer.
4. The info being shared here is great, just posted in the wrong place.