Hola Bandido
I don't think there's reason to worry.-)
The "resistor" is for the "reserve lightning system" that did
not come with the European bikes. So no 'resistor' on European bikes.
I'm not sure what "four" diodes you're refering to.
Your picture (including the diodes)
looks exactly like on like my (European) bikes.
Here's the European chart:
PS:
there are several different European diagrams
UK / German / French but the above is typical.
Best regards
Octano
Da' Supercharged Bulldog
"A designer knows he has achieved perfection
not when there is nothing left to add
but when there is nothing left to take away"
Antoine de Saint-Exupery