Your water heater plan sounds good. Roger Brown has an interesting shower article on his 4Crawler website.

Other links with a wealth of info on this topic:

http://www.hotwatercampingshowers.com/SD.htm

http://www.off-road.com/toyota/reviews/shower/

http://biobug.org/jeep/zj/shower/

-- Matt


'89 4runner SR5, 3.0, auto (fun)
'93 xtra cab, dlx,3.0, 5spd (work truck)