Actually, the electric fule pumps I was using were that simple to fit. Mount, hook up one wire to an ingnition on supply and the other to earth. Put the fule line from the tank into the in side and the one that goes to the engine on the out side on the pump.
If you really want to be tricky you could wire in a switch into the power supply and hide it somewhere so the pump doesnt operate when its switched off. Or have it hooked up to the oil pressure switch so if you are in a big accident, the pump will stop once the oli pressure drops. Handy if the ignition is still on (pump still pumping) and a fuel hose is split - or so CAMS says.....