My son's 96 f250 was idling on his driveway when it started running rough and stalled. He though maybe he was out of fuel but when he was checking under the hood he found the wire connector for injectors on the right valve cover was smoking and fried. Any idea what would cause this to short out? It seems like a fuse should have blown instead of burning the wires. Any suggestions would be appreciated. I suspect he will have it towed to dealership for repair but it would be good to know what to expect. Thanks.