2008 dodge ram remote start

It was the BLACK/ white neutral safety wire from the RS that I was missing. They show it wired a couple of ways, not sure which way is correct for my 08 Dodge Ram. As long as that wire is resting at ground, it fires right up every time. Any suggestions on which is the correct way to wire that on this vehicle? Not sure why that wire needs a switch...if the truck has a factory starter interrup for anything other than Park or Neutral, can it just be wired to ground? What is the function of the switch? The last RS I did (a very basic Avital several years back) had a "valet override" switch that basically let you deactivate the RS system via that switch. Is this the same function now?

Kinda what I figured, that I could just ground that wire...I installed the switch anyway and will use it for "valet mode". All safety checks complete, RS is working reliably, only things left are parking light output and rear defrost output. Those can wait until spring - it was about 2 degrees above zero today and the Mega Cab won't fit in the garage with the door closed so I'm done for now. At least I don't have to go outside to start it anymore! Thanks to all for your help!