mount a relay in the boot area (I mounted mine where the fuel cut-off switch is)

take the original fuel pump feed wire off the pump to pin 85

run a new wire (doesn't have to be heavy gauge) from pin 86 to an earth point

run a new 30-35A wire, with a 40A fuse near the battery, through the front bulkhead (with a grommet) to pin 30

run a new 30-35A wire from pin 87 to the fuel pump

run a new 30-35A wire from the pump to earth