Hi XT wizards

EDIT: updated title as wiring looks ok for now.

I built a scramberified XT600 for our daughter and did good 5000km on it before she was old enough to get a bike license.
However, 2 days before she was due to get her license, XT lost the spark.
I stopped after a short ride around paddocks, left bike idling for about 1 minute when it suddenly just died.

Symptoms: cranks fine, just no spark
Problems ruled out so far:
- Kill switch
- Side stand switch
- Ignition lead
- Spark plug cap
- Coil
- CDI to ignition coil continuity

Still to check:
- Clutch switch
- All connections etc.

I suspect this is caused either by corrosion after recent 1700km trip out of which 230km was along beach or by steering head bearing change while handlebars, including all wirings were hanging awkwardly upside down all over the show, possible kinking the wiring somehow.


Anyhoo, while trying to figure out what inputs CDI needs for allowing spark, I noticed a bit weird voltages in CDI connector.
Could somebody please measure voltages in CDI plug wires with ignition on, ready to start.

It's 3TB model CDI like below.
So far I get 12V only on top left wire of right hand plug whenever ignition is on. Should any of the other wires have any current?

Another odd finding was on wires going to side stand switch.
With ignition on, blue/yellow wire has only 4.5 volts? What's the deal with that? I was expecting to see 12V?