I get the part that you need to get a wire directly from the battery to the relay so the pump gets the 12V all the time when the car is running but what I was after is if this 12V mod is necessary http://mkiv.com/techarticles/12v_mod/12v_mod.htm since the relay will trigger itself on voltage between 1,6V - 12V so from what I understand you dont need to do the 12V mod to the ECU and just take the cabel that feeds the pump from the ECU and run it by the relay that triggers the 12V from the battery, the original fuelpump cabel gives out 9-12V without the mod done but that shouldnt bother the relay that feeds the pump with 12V all the time since the relay will trigger itself on voltage between 1,6V - 12V.