I will be winterizing tomorrow. I have located one inlet hose in front of the galley sink. I will detach and put the hose into gal. or two of antifreeze. I have two controls for the Ac one located next to the sink and one is located in the aft cabin. Is this inlet the only inlet.Since there are two controls,is there another unit that I have yet to locate with its own inlet. The one unit is located under the single settee across from the table.I hope I haven't confused anyone. Your help is most appreciated.....Thanks!