the diagrams at www.mymopar.com might help. there would need to be the hot 12V power in then the lead to the coil neg primary terminal (for the sensing function) then a wire for the bulb (& 4th, maybe a dedicated ground connection). EDIT I would assume the dark blue is the switched 12V power in & the yellow with black tracer is the sense wire (as yellow/black is the color of the wire from the ECU to the coil neg primary)