Cheers, i thought that had somethinng to do with the ABS as when the system is pressured up when you leave the ignition on, it doesn't click, but when the pump kicks in it activates the relay. I too need to find out which one the fuel pump relay is, also i think it was your post or maybe someone else'd when i was searching last night, the spare relay socket i have is for air con apparently. From what I can suss out so far all four relays pictured work, BUT the black and grey ones don't, I've just bought the car and the fuel pump is wired to the rear lights... Hence why i need to sort it, and there's obviously been another problem before someone has done this.