Keep the top 2 bolts in , its a 10 mil socket , use 1/4" drive an feel for it, its a pain in the arse.. Socket has to fit into a half circle sort of thing. Check with your finger first to locate it ! Undo it first then the top 2.
There is only a positive and a negative going to the pump, the pump runs off the wiper motor, so turn wipers on an with a power source put power to the 2 wires, if it cycles it will go click click . if it clicks an no fluid then its the diaphragm . 4 bolts on white plastic housing hold the diaphragm in place !
