this is a post from the eg section, and one of the guys there suggested i post here instead. so here it goes!

so i searched around and couldnt find much at all about wiring nitrous systems. so heres something i drew up. if anybody has any suggestions or comments please let me know. ill probably be starting it tomorrow, and if its gonna blow up, the earlier i know the better! thanks for any info!

 

im starting this tonight, and my knowledge of electronics is to say the best negligable. if anybody with a bit more expertise than me could give any advice it would be much appreciated!

 

Assuming that the clutch switch is closed with the clutch out and that the MSD RPM switch is simply a relay and the point where you have a 20A fuse is receiving a switched voltage, then when the desired RPM is reached, voltage should be applied to the red wire of the ZEX unit.

What you may find though is that the RPM switch point will change with temperature - this has been noted by some people who went this route but used it to activate VTEC.