look under the bonnet and locate the filler bottle neck, which ever side this is mounted is the side that the road wheel and inner splash guard needs to be removed to gain better access,after removing the wheel and splash guard the bottle and pump should be starring at you.remove the supply wires and plastic feeds, the pump just fits through a tight rubber grommet.insert the new pump into bottle fit wires and tubes,fill the bottle test for leaks now try the pump,before continuing the refitting, if it don't work check fuses and power supply to pump
wirecutterman, December 2009
