Electrical

Hello All,

"People say" spark plug polarity is important.  But:

1) Why?  If the spark is at say 10,000 volts, why should adding or subtracting 12 volts matter?

Is it possible to buy new rubber seals, grub screws etc? 
Mine vibrated off today - luckily fell into the space behind the headlight so was able to refit once I found an Allen key that fitted. However the rubber seal is really brittle.

Does anybody know why an ignition coil gets hot. 
I was running my Dominator just off the battery, and it got really warm, it's a MA12coil 12v battery.
Also does anybody know what i can do to fix this.

Need a pair for my old girl which runs 12v twin coil.  So a pair of lb05f 5ohm caps about 14" long.  All I can find is kits or bits to make them up myself - never done this and don't really want to start now.

Hi all I'm looking at replacing the wiring loom on my es2 iv seen a lucas one on ebay does anyone know of anyone that's had a loom off ebay and if they are any good 
thanks Steve 

Hi guy's need your help.

Does anyone have a good illustration of how the WIPAC IGN/EMG & High/Low rotary switches work?

Taken the mag to bits . It does spark but feels a little rough . Shimming too tight , will need a thicker end shim . Also no carbon brush under the points plate , something missing?? Or does the manual mag not have one ?