I just got an 1980 StarCraft Pine Mountain Pop Up Camper . It is in great shape for its age. When I connect the battery I notice current draw and some clicking in the fridge or heater area. It does this and I need to know if this is normal. It appears that it is to much current to be on continuously. Could it be an safety feature to purge any lingering gas and will it automatically quit Also what are the 4 plug in fuses in the panel for? 30 amp= main power the rest ,can someone tell me ?