Mine is on the front, street-side corner of the trailer. It is behind an exterior vented panel that you open to gain access to the heater and the water tank drain. It is close to the fill point for the fresh water tank and the city water inlet. Yours should be located similarly.
Hi-Lo 1707T - Tire Minder TPMS on Tow Vehicle and Trailer, 300W Solar Battery Charger, Equal-i-zer WDH, Progressive Dynamics Converter, Fan-Tastic Fan
2014 F150 Platinum 4x4 3.5L EcoBoost SCrew