The connections on the back look good. The voltages seem kinda ok. I say kinda, because I found 26 vac on the DC side of the trailer with the generator running. We never had an issue with our other trailer. I'm going to grab a better meter and do some more checking tonight.
As a side question, for those who know a lot more about trailer wiring than I do, when I meter the AC side of things, I have 120 vac from hot to neutral, close to 0 from neutral to ground, but nothing from hot to ground. Since that is something I wouldn't expect is that normal?
Camped: 2020 (Days/Nights) - 58/49
2019 (D/N):27/20, 2018(D/N):24/17, 2017 (D/N):30/25, 2016 (D/N):32/23
TT: 2020 26' Hemisphere 26BHHL
TV: 2020 GMC 2500HD 4x4