Does anyone know if not having the ground wire on an injection harness will work for the ford racing main harness on an efi swap into a 66 Coup? Or , How can I add a ground wire into the injection harness I have?
Mine would not crank until I connected the ground wire (which I had overlooked). You also need a really good ground strap from the motor to the frame. If it's missing from a new harness, Ford should replace it.