We have a Dometic 3 way fridge in our PUP (sorry I don't have the model). I am wanting to plug into house power to get the fridge cool prior to our trips, then use 12v while in transit. Our PUP has the sink that folds down, and there appears to be switch that turns off power when it is down. I don't know if this just effects the lights, or if it includes everything electrical. Will the sink folded down prevent power from reaching the fridge?