I added 2 pics, first one shows the position of the nitrous jet. The kit comes with the tap to thread the hole for jet to screw into. I used a drill bit one size smaller than provided being that it'* plastic I was tapping.



This one shows the throttle position switch ( marked with an X ) The blue wire is the one you want to tap into. I just split the insulating wire and pulled back enuff to tie in the kit wire and a drop of solder makes it all good.