I have the original pressure washer, hoses, wands and the Beaver bag that it all came in.
When we first got the coach about 4yrs ago I pulled out gave it a good cleaning and put it back together and have been using it, works great. As we live out of town and on well water I can't use use the water for washing. So I have made an adapter off the out side shower and I connect it to the the pressure water inlet, turn on the shower and it supply's the washer.
I have even made up a longer hose and have no problem going around the coach with out changing connections.
When I'm at the sani dump I always fill up the fresh water if it is good that way I have 100 gal. To wash the coach, toed, bikes or what ever needs washing around the house, or the odd time on the road if needed.
Would be lost with out it.
1999 Patriot