The absolute best thing I have done on my westy is GoWesty hands free
faucet mod.
http://www.gowesty.com/ec_view_details.php?
id=4209&category_id=128&category_parent_id=
My orginal faucet was broken so I replaced it with an identical one.
Wasn't very happy with it until I got the GoWesty foot switch. Easy to
install and no more trying to remember which way to turn the facet handle,
i.e. city water or onboard water tank. My wife loves it! We leave the
faucet in the always on position.