If you are a qualified electrician or a member of an allied trade/professional then don’t bother any further with this article. However if you are a non technical person who is occasionally baffled by electrical problems and their associated terms then the following may help you understand the basics of car electrics.
I also pay my respects to the anonymous author who first wrote the famous ditty on “Joseph Lucas - Prince of darkness - or why the poms drink warm beer” where to my knowledge the concept of electrical energy as smoke was first published..
As a 15 year old apprentice radio/radar technician I still remember how hard it was to come to grips with the concept of electrical energy. You can see it in lightning and sparks; feel it in an electrical shock; smell it in ozone; actually taste it by putting a 1.5 volt battery on your tongue [it tastes salty]; hear it in electrical spatter across insulators, bangs in thunderstorms and the zap of an electrical spark. But in the end you are still left wondering what it is, as all of the foregoing are actually secondary characteristics of electrical energy.