Outer Limits 4x4 Board

Im planning on running two tanks in my GQ ute.
I want to be able to flick one switch that will switch between either aux or main tank, and also switch between either sender (so I can just use my dash guage).

Im sure someone has already done this-
So what do I need in the way of fuel slenoids and relays?
Also a diagram would be good

I think its called a fireball 3, does fuel pick up, fuel return n change gauge in 1 unit, needs an On/On switch around $130. Most auto elec suppliers should have em in stock

too easy thanks mate:D