Moroso rocker switch panel... I don't use the momentary switch on the panel... FUEL - H2O - FAN - NX - N2O ...NX is the bottle heater. My purge button is the red button that got cut out of the pic (near the column). The button on the T-handle is the line lock.
I use the N2O rocker to arm the system... a WOT switch on the throttle body to activate... and an MSD window switch dialed in at 3400 'ON' and 6900 'OFF' ...located where the wiper motor used to be.
Not exactly a good pic of the interior... the brightness in the pic makes my interior mis-match... the center console is actually black in appearance with the naked eye (hmmm)... I made the cover plate out of Lexan, painted black on the backside...
I like the way nitrousdave did his setup too... now that's very James Bond (cool/stealthy)