Another update! So I was walking behind my rig last night and noticed that there was no light shining on the license plate. Popped it off and realized it was full of corrosion. Looking at it closer, it doesn't appear to be weatherproof (snap-fit plastic pieces and the wires feed in loosely through a hole.
Already reached out to Mitchell, but figured I would let you guys know. It might be a good idea to throw some silicon on the base and where the wires enter before installing.