2012 Greystone 33CK no 12v to front AC

I have a 2012 Greystone 33CK and the front (bedroom) AC doesnt have 12v to the thermostat. Previous owner said it was working then it wasnt. No fuses are blown and the other AC unit works great. Does anyone have access to a wiring diagram for the trailer so I can figure out where the 12v is supposed to be coming from. I ohmd out the thermostat wiring and it was not OL so not sure what is going on. The AC unit is a Atwood Air Commander 13.5

Thanks for any help!