C11G board wiring on KX1

[cacofonix]

hi there

i have a KX1 for about 18 month. i'm happy with it
but i want to increase performances by changing spindle.

my idea is to use a HF spindle, to increase power and to decrease noise.

my main problem is = my electrical or electronical knowledge is close to 0

so i wonder if someone can explain me how to remove current spindle controler
and how to connect a new one to C11G board

thanks a lot

herve