You have to post in the form of a question for people to "need" to answer. Like, did you have those on the same car that had the hood ornament swan with the plastic wings that light up?
The tool dealers make something like this for testing ignitions- a guy I worked with had planned to get a complete set of 8 so he could test ignition on a v8 with it running, seemed like a pretty good idea. Don't know if I'd run it on my daily driver for everyday use tho'.
I think they might be cool on a hoodless car for the fact that normal people will think an engine is supposed to make flashy lights while running, as normal people have never seen a running engine in front of their faces. Although I have to tell you, I usually see these on Sportys ridden by yuppie biker-wannabees, and when I do I get the urge to throw a jack handle in their forks.
They look like a cheap replacement for the Anderson clear glass spark plugs that came out 103 years ago.
The Jalopy Journal
