I installed my QTP cutouts and wired it to an Aux switch using this module:
adds several features to give the user the convenience and the full control of the cut-out flap operation.
timers.shop
Using this, turning the Aux switch on causes the timer module to run the cutout motors for a set amount of time (I settled on 4 seconds), and they stay open, until you turn the Aux switch off, in which case the timer module reverses the motors for 4 seconds, closing the cutouts. It works great, and is simple to wire up... feed it +12V from a switched power source, connect it to ground, connect the 4 wires from the two cutout motors (+/- from each), and connect the output from the desired Aux circuit to the switch input on the timer. All the programming is done via your phone through Wifi to the timer module itself (you pulse the switch input 5 or 6 times, and you'll see the Wifi SSID pop up in your available Wifi networks list on your phone - connect to it, and launch a web browser to talk to and program the module).
You can wire the cutouts straight to the aux switches, but then you need a couple of external relays, and you need to use 2 Aux switches - one to open them, the other to close them. Using the module makes it a single-switch operation... Aux on, cutouts open - Aux off, cutouts closed.