Which pump is it that you want to check? The pump in the tank is the pre-pump but the pump that you hear when you cycle the key is the main pump under the car. Either way they both power up off of the pink wire that gets it supply from fuse 11. If it is the pre-pump then check for current at the pink wire in the 4 pole connector in the trunk, kind of by the power antenna goes. If it is the main pump it is just as easy to check right at the pump. It will be the pink wire that goes into the yellow housing on the pump, usually the upper housing. The lower housing is black and it is your ground.

Mark