If you make a hole in the transparent vinyl
Interesting suggestion. With a hole in that vinyl tube I will smell even more ozon whilst testing than now. Very exciting smell, btw, must have smelled like that during the big bang. A warning: don't be tempted to test sparking and have the battery being charged at the same time. That certainly could make a big bang. Now I come to think of it: could
that have been the origin of the big bang, the Creator being careless with batteries, I mean?
and poke a led pencil through into the sparks pathway you can check and take note of coil polarity -I can't remember for certain, but I think it should flare towards the engine side. I'd love to know for certain if the polarity is reversed for #1 compared t #4 (personally I don't believe it is.)?
Good question. I seem to remember my timing light induction clamp had to be flipped, so that indicates some sort of polarity. Actually I believe it's a relative thing and the current is not like the AC we have at home. I mean in our ignition system we don't see the sinus going through the zero line. That's why I like to think of a third category: lightning. Like you I want to know some more on this, that's why I've asked the experts. They're still studying it.
ps My 1st500 used to be wired so that selecting high beam didn't switch off low beam so both were on simultaneously and actually, until my battery got very old, I never had any problems. (Do not be a parrot, lesson learned 
)
This drainage thing is an US phenomenon where folks use motorcycles at too low rpm, stand at traffic lights a lot and use them for distances where we prefer a bicycle.
The tail light was wired always on, and one day after the battery got sus it died and I had to disconnect the tail light wire under the seat to get it to start again. (I replaced the battery after that!!)
A taillight during daylight is not very usefull and actually makes the brakelight less noticed. I might install an extra switch to just bring on my DRL (21 Watts Ba9s halogen) and
not the taillight and
not the instruments lights. On entering a tunnel I would simply have to switch the original lightswitch to 'P' to add taillight and instruments lights.
