I have an 88 mustang gt 5.0 with 5 speed trans and ac equipped. I have a new 3 post starter relay switch (Echlin). My son in law installed it and I think he may have got the wires installed improperly. The exicter wire from the ignition switch is no problem. I would sure appreciate if someone could tell me the color codes of the wires that hook up on the battery positive side of the starter relay switch and the color of the wires that connect to the starter side of the starter relay switch. Also one of wires is a lead from a silver box can anyone tell me what the silver box is?? I would sure appreciate help on this problem.