I also crossed wired battery, I have since then replaced (1) 15 amp fuse for radio and front bed lights, all (5) 20 amp reverse polar fuses, but I can not get my AC/Heat thermostat to kick on at all. everything seems to be working properly except this. I even took out circuit breaker for the unit and hot water heater as they were connect and replaced it and nothing. I am at wits end, I am also at Enid, MS Persimmon Hill CG if anyone's close. LOL let me tell you I am spent!!!!! its our second time in camper. 270BH.
I will hang up and listen.