I have a time "ON" delay alternating relay that will fill the header tank from my two wing tanks using facet pumps, has a manual override if it fails. It is on my web site at www.jrl-engineering.com click hanger and my project. I demo'ed it a few years back at a KR fly-in.
Ronald R. Eason Sr.[Krron] President / CEO Ph: 816-468-4091 Fax: 816-468-5465 http://www.jrl-engineering.com Our Attitude Makes The Difference!