My guages fuse blows on my 70 el camino 396 ss when ever the ignition switch is turned to engage the starter. I have unplugged the gauge wires but the fuse still blows. If the ignition switch is placed in the on position the fuse will not blow. I have had the gauges restored so I don't think thats my problem. The head lights and wiper switch work although not on the instrument circuit panel. The blinkers and hazzards do work which are on the instrument circuit panel. I have looked for expossed wires and have found none. Any thoughts.