I recall seeing photos of one or more just attached to a rubber hose where the screen would be. I recall they ran the wires thru a drilled hole in the sender and sealed with epoxy. I don't like the idea of pump in the tank, though I never heard of a gas tank blowing up like in Hollywood movies. They are even questioning now if the Swiss Air flight really blew up due to bad wiring in the fuel tank or if people really did see a missile go up just before that.
