TOPIC:

Seen a lot of issues with voltage, switch's, 12 V lately.
I've been around a long time.
I remember the Wired George coil mod.
I just recently cleaned up a kill switch / throttle tube for Z1's / KZ's for a simple eBay item for any type of hot rod, dirt, sand, drag race machine. Just junk laying around.
Most guys might not even know what the inside of a on/off kill switch looks like?
From the battery the yellow / yellow re stripe wires go to this switch! and these 2 tiny dots of copper transfer your power!
These little items get corroded and there is a source of voltage drop.
they clean up nice! I'm sure a lot of you spray them up with contact cleaner and blow out without dis-assembly to help.
At least this is how I see it? Just an opinion?

Thanks for posting those pics and explanation. The points of those two tiny copper dimples is all that stands between happy riding and pushing a dead bike. Very little dirt or corrosion is needed to bring all that wonderful electricity to a halt.

Those pointy kill switch contacts are very similar to the ignition switch contacts that often cause voltage drop in the coil primary circuit.

We delved into a Z1 ignition switch a few years ago chasing an intermittent electrical gremlin.  What we learned is in the post below.

www.kzrider.com/forum/4-electrical/60681...-and-troubleshooting

Good Ridin'
slmjim & Z1BEBE

If you can find a slightly heavier spring this would also help if you are refurbing, one of the reasons small contacts like these burn up is a lack of spring tension due to ageing which makes the contacts "arc" (think about a loose battery terminal)

Less current load = less arc = WG mod