Service came out and looked at my camper yesterday. There was a ground problem which he fixed - but that did not solve my light issue. After some tinkering he could tell by the fact that the bad light had been re-installed due to some extra caulk being in place. He took the other light out and after comparing the wiring figured out the one that had been replaced had been wired wrong. He re-wired and all good.
The light must have been damaged or something in transit. Thanks for everyone's input here. Going to the dealer was the right move here for sure, I would not have figured this out.
2008 Tundra CrewMax 5.7
2011 Jayco X18D Hybrid Travel Trailer