I had it hooked up in my Z31, and I have it in my S30 (same motor, VG30ET). I forgot to implement the
though! In my Z31, however, it was like this: I used the going low circuit. I decided to use this since the clutch switch I had closed when the clutch was engaged (pedal pushed in). Other people have used the clutch switch at the bottom of the pedal's travel. I didn't see this as working optimally for anything other than launching. Since I wanted flat-shift as well, I chose to implement this method. However, in my case the Z31 has a normally open clutch switch installed (for cruise control, I believe), I replaced it with a normally closed one (from the brake pedal, to trigger the brake lights). I wanted the launch control to be activated as soon as the clutch was pressed in. So, since the switch closes when you press the pedal, the going low circuit switches the pin on MS2. JS11 is what I used, but you can use several, IIRC. You just have to check against that chart to make sure you don't rule yourself out of using other features in the future. JS10 looks good in your case. I implemented all of this in the proto area, and brought out a single wire from the case to the clutch switch. I attached the other end of the clutch switch to the ground. Once you do that, let the fun begin. I'll admit, I mainly did it for the flames to which I so far have been unable to produce. Keep in mind it causes really high EGTs and can burn up turbos and will definitely burn up catalytic converters.