coolbreeze01 wrote:
This pump won't drain your battery or take all day:
http://www.harborfreight.com/15-79cc-1-in-gas-engine-clear-water-pump-2220-gph-69747.html

I'd say if you hooked that pump up to your camper, you're going to need a plumber about the time it starts up and the creeks going to dry up pretty quick. Bad advice! That pump is rated at 2220 Gallons per hour, it seems like you might be really clean when you got out of the shower. 37 gallons a minute! LOL! If you're going to hook any water pump up to your camper, it's going to have to have a pressure switch to shut it off. I'd say somewhere around 40 PSI would be a good place to shut it off at. A gasoline engine is not going to be the way to go and I will not even get into why you should stay out of Harbor Freight. You're going to have to calculate pipe size, pipe length and elevation difference between the pump and the camper. Not to mention voltage drop in the wiring. It's do-able with a 12 volt pump but you will have to factor in the items I mentioned above.