Recently my son started his saturn and smoke came out of the drivers side underdash area. He shut it off, and got out in case of fire, and called me. He got back in, the car started and drove okay, and seemingly everything works. However, his mechanic says he found a wire in the dash harness that had burnt and melted away the insulation. He cut it out and taped it off, and gave it back to him. I want to look at it to make sure he is not driving a time bomb. Is there a particular fault Saturn mechanics know about that could cause this type of malady?