i am converting to mpfi, the resistor box that I have has five wires only, four black and one red, ok my question is where do I connect the yellow/black wires from the injectors, I have read write ups and they keep saying to connect it to the yellow/black on the resistor box, so I want to know if I just could connect the yellow/black to the red wire since the 4 black wires just go to the injectors, and thanx in advanced for your help

 

Red wire on your resistor box is 12V from main relay (yel/blk). The yel/blk wires from the injectors go to the four black wires on the resistor box.