K2543 ignition working on 10v

i would like to run the k2543 kit on 10v. at the ignition I only get 10v through a resistance wire. the new k2543 kit has the option to choose 6v and 12v. now I made a resistance calculation there.

and should I change the resistors :
R1 / R2- 270 ohms
R3 / R5 / R6 / R7: 123 ohms.
is this correct?