you don't need to change your 2wd loom with 4x4,just need to fit PF09 TPS from 4x4,also you need to make 3 electrical connections:1)the singal (black)wire needs to be routed into the car to the ecu and connected to pin 2 of the ecu
2)the heater element wires(both white) need to be run to a live and earth,we recommend the chassis as an earth point and the fuel pump relay positive output as a live source,this ensures the current hungry heater is only powered when the engine is running
also must but remove the two wires of TPS and return around (not the middle wire).