3rd AC room sensor prewire location?

[RipNC]

Does anyone with a 3121RL (or 3120) know where the 3rd AC room sensor prewire is located? I'm guessing it comes down in the same general location as the wire for the rear unit sensor, but I'd rather know and locate it before I order 3rd unit. Thanks in advance!

[DQDick]

On our 2017 (not the same model) we were told by Keystone that the wiring for a thermostat was behind the controler for the vent fan we would replace with the AC unit. We took the fan controler off the wall and the thermostat wire was right there and that thermostat then controls the 3rd AC. If you have (In Command) and just need a sensor I'm not sure, but it could be in the same place.

[RipNC]

Thanks Dick, that makes sense and is logical. Probably would have checked everywhere else first. I'm still trying to decide which Coleman unit to use, "Power Saver" or "Quiet Series" (apparently you can have quoet and power saving).

Tha.ls again.