How to check a fuel pump relay

[Budthewiser]

[size=78%]I put a multimeter on the connectors supply to the pump and got 12volts. I then took the fuel pump out and the connectors in the tank were  badly corroded. The pump work fine so I've ordered a  new fuel filter and while I'm waiting I'll double check the pump is pumping but I think I've solved the problem[/size] :lol [/size][size=78%]. All down to corroded  connectors on the power supply to the pump[/size]