This may or may not be helpful but worth checking: I have a problem with the fuel pump relay on my Saff Cossie that was there when I bought the car. Basically the fuel pump relay would not switch with the correct coil wiring (according to a diagram I'd seen) where the negative side of the coil goes back to a pin on the ECU. That was, strangely, unless you remove the ingnition relay then it would work fine! The idiot who had the car before me just jumped the coil switching wire straight to the main fuel pump wire to 'solve' this. I never got to the bottom of it really but ended up connecting the coil negative to the same point at the one for the ignition relay and it's worked ok ever since. I know that's not right though and really should look at fixing it properly. Anyway what i'm suggesting is you try it with the ignition realy out and see if your pump runs. If anyone else recognises this problem maybe you can post a solution?