I have a new 2020 Imagine 3000QB. I am running a cable from an outside cell booster antenna in through my slide gasket near the thermostat and the co2 detector. I would like to tap 12V from either the co2 detector or the thermostat to install a usb charging port for my wireless hot spot using this antenna cable at that location. Is there 12V in this wall and if I were to tap it would it support the 1-2A (DC) draw of a USB charger?