The diagnosis of a short is correct, or is it. The problem is that the coil is still 'on' there is still voltage at the coil, current is flowing through the coil causing heat. Has this car had any electrical work lately? The ignition circiut is simple not shuting off. If you are not comfortable with wiring and electrical work seek professional help, or find a friend to rope into helping you. No advice can help here, the problem must to sought after on the car, under the hood, or the dash.