Does anyone happen to know the pin for Nitrous Control for the AEM-EMS 1010 to plug into?

Here's the deal, I now have a Nitrous Express N-tercooler kit, and have all the solenoids wired up but instead of using a WOT (wide open throttle) switch for activation, i know the AEM EMS can control Nitrous. I don't know however if it would be the same kind of controls for the N-tercooler kit, and how exactly that would be done.

Wouldn't it just be wire it into the EMS from the solenoid for the power wire and ground it, or would i still need a on/off switch (like the original directions say) in between the EMS and the solenoid, ground it off of that, and run the power wire right into the EMS?

anybody know how that would work? your help is greatly appreciated!