first thing is to check the fuses.dont just do a visual,but rather use a test lite as the eyes can be deceived. if fuses are good,disconnect the plug at the pump and with the key on,have a friend operate the switch while you probe the power wire with a test lite.if the lite comes on you have power to the pump and a replacement is in order.to be absolutely sure you can test the other wire at the plug {ground} by clipping the test lite to the pos battery terminal and probing the wire.if the lite comes on the ground is good.hope this helps.