Yellow wire on the MSD should go to the Blue wire on the Interface. The Brown wire on the Interface will be hooked up to pin # 85 on the N2O relay (there is a diagram at the end of the Interface Install manual). On the Interface Trigger +/- will be set to "-" and Trigger Power will need to be set to "on". If your MSD window switch is not activating the Interface won't be triggered.
Originally Posted by ws6formula98
I need a wire diagram on how to wire my Interface(dry shot) and my MSD window switch with the relay and WOT switch... i had it and work without the msd, but now im adding the msd and i cant fiagure it out. i try the wire diagram from HSW and its not activating on the nitrous or the interface...its driving me crazy!!! please help