1999 coachman 085sd

I haven't hooked anything back up yet and when I bought it we pluged it in to their house but don't remember the outside lights being on but it was daylight so may not have noticed. I just finished the front passenger side corner today and set the fridge back in its hole. It is a dometic rm2551 made in sweden. When you turn it on the auto light just flashes and I don't have any gas so I think that is what it needs right now, not sure if 120v will let it run or not. It just has a auto button I think, cant remember now that I am back in the house. This camper looked new on the inside and the toilet has never been used but sitting for so long has me worried about the fridge and the hot water tank but will be a week or so before I get to that. I will try to get and photo account somewhere tonight so I can add some pictures to the thread. I have a 2017 F250 long bed srw so the cab height was 4" to high and I had to put the camper on pallets to bring it home but the rebuild of the cab over has let me take out the 4" to fix that.