on the z6 head theres two plugs on the vtec soilonid(black plug with green wire and green plug ) whitch one do i run my rpm switch to

 

green/yellow wire

 

you have to run your vtec wire (the single wire(green)) to a relay off the rpm activatived switch. the signal off most RPM A/S are a negative polarity and you have to change it to a positive polarity like vtec power wire.