Thank you bluwtr49, Old-Biscuit for the answers (and Fireup for understanding). I saw the 4gpm shurflo but didn't know how well they worked. The wiring wouldn't be an issue for me, and a simple relay circuit could be used so existing switches could be used.
I (and others here) don't really consider camping at racetracks true "boondocking". We don't have hookups but run the generator for 4 to 5 days non stop (as does everyone else there) and if I need the water refilled or the sewer pumped (or ice or a paper or dish worked on or whatever) all I have to do is sit outside for 30 minutes or so and flag the truck driver down.