Originally Posted by SlowerThanYou
look at the plugs at the injectors each plug should have one wire that is the same color. that is the wire you run to the resistor box and as far as the wires comming off the resistor box It shouldnt matter
The common wire should be yellow between the 4 injectors, but you only need to connect one of the yellow wires coming from the ECU to the resistor box, not all four. Connect one yellow wire to the resistor box, and tuck the other 3 away, the follow the rest of the diagram above.