If anyone has experience with the above title, any help or diagrams would be awesome. I am not sure if there is a ground from the nitrous solenoid on the zex kit. I know there is a ground that comes from the nmu, but does that ground the solenoid? the retard box will not work properly if the nitrous solenoid isn't grounded. Anyway, I am wiring the window switch through a standard 5 prong relay

Thanks

 

I have no experience with this specific setup, but if you post wiring diagrams for each of the separate components, I can help you wire it all up.