Solar panel cable routing

Well after reading peoples thoughts the fridge vent seems the most likely spot, but my fridge goes right up to the ceiling, with no cabinet in between. If I feed the wire down will I be able to see/find it behind the fridge at the exterior panel opening? My 5th is so small I do NOT have a basement, and there is the kitchen sink, cabinets, and "living room" between the fridge vent to deal with. If I can get to the wire from the exterior panel opening then I can snake it under the sink and through the cabinets, but there is NO good way that I can think of to get it from there across to the front wall that I have to drill through to get to the batteries which reside on an exterior rack under the 5th wheel overhang.