Two-Stroke Project, Remove Kill Switch Ground Wire w/Relay

Hello , My name is Mike .

I live in the Netherlands and i'm currently working on an scooter two-stroke

But i can't get my head arround what the best way is to wire a diy arduino like remote starter

my challenge to solve is :

I got an Innerrotor ignition installed on it , with a Light / charging coil (60w)

to shut down the engine with the key i connect a wire to the ignition key and to a wire that is normally the killswitch.
When the key is in off position i cant start remotely because the killswitch is connected the wire from CDI to ground

what kind of options are their to take the Killswitch wire of the ground with a relay

i got the part allready figured out how to start remotely

i got plenty of E-parts such as transitors , Mosfets , diodes and some SRD-5 VDC-SL-C
and some PCB to solder everything together for in a waterproof enclosure

my option was to connect 30 to the ignition switch
87a to the killswitch wire

and make this relay latching

if anybody can give me some tips ?

thanks in advance