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A few weeks ago we talked about ways to automatically control the flow of
fuel to the header tank. I used a 12vdc timer relay and wired it to a float
switch. It has a 5-30 second delay before it turns on and it turns off as
soon as power is removed. it is sort of a "all in one" solution, very easy
to wire, and very light. I have seem them in the 35-65$ range. Mine was a 5
amp miniature unit if anyone wants the number and I have a picture of it.
The wiring is shown below.         Scott

                   power
                     |
                     |
tank switch------timer relay----tank one
                     |
                     |
                  tank two

LML website:   http://www.olsusa.com/Users/Mkaye/maillist.html
Builders' Bookstore:   http://www.buildersbooks.com/lancair

Please send your photos and drawings to marvkaye@olsusa.com.