1) It seems a little different from most RVs from what I remember from my childhood... Our Scamp
seems to have a separate gray and black water hose valve, so you have to hook up and dump each one separately. Is this correct?
2) I'm assuming I only fill the fresh water tank (labeled "fresh water connection") if we are NOT hooking up to city water with a hose (labeled "city water connection"). Is this correct?
3) And here is where I am really confused... the black on/off water pump switch inside... Below I've included a photo of the source of my confusion. (I'm in the Scamper right now, it's just sitting here staring at me, daring me to do some damage with it.)
1. The Scamp
does have separate black and grey tanks. You dump the black tank first. We often have a 2 gallon jug of water. After we dump the contents of the black tank I close the black valve and dump the two gallons of water down the toilet and dump the black tank again. Does it have value, I don't know but do it.) I follow by dumping the gray tank.
2. We always carry a half tank of fresh water for using the bathroom while traveling or for what ever reason. We carry a 10 Liter/2+ gal expandable plastic container for filling our fresh water tank.
When connected to city water, we do have a pressure regulator at the faucet.
We also carry bottled water in our tow vehicle, for hikes and as we drive. As well here in Newfoundland every provincial park and some communities have a boil water order though few locals follow it.
3. We only turn that switch on when we're not connected to 'city' water and only when we want to pump water like when using the bathroom or washing dishes. We never leave it on when away from the trailer, actually never leave any water on when away from the trailer. Over the years I've seen trailers fill with water while the owner's away.
We have a 1991 Scamp 16 and it does not have a pump on the shower output. It drains directly to the gray tank. That said we never take showers in the Scamp.
As to filling the black and gray tank, we can go up to 4 days without dumping if we are careful and of course taking showers somewhere else.
Hope this helps. If you do not intend to shower in the Scamp blocking the end of the hose to the shower drain is a good idea. That forces the gray tank to drain on the ground instead of on the shower floor.
Wishing you well with your Scamp