It appears that the resistor is used to increase amperage. I am not totally positive on this because I cannot read either language.
I work on small engines and have converted clone parts on several projects. But judging from the schematics it appears that it is for increasing amperage.
@Mikelan125R I truly love the color of your bike. It's got me thinking of trading in my G650GS and getting one myself. I had a 82 IT 250 that I used to race in local enduros back then . Always loved that color with the black graphics.
Ride safe my friend and enjoy the Beautiful countryside.