I have a 72 chevelle and i'm trying to get it going it was running but then i replaced the brakes and now it won't start.I have replaced the starter and alternator. When i turn the key nothing happens not even a click, but if i try to start it using a screwdriver and touching the positive battery terminal and the small terminal on the soilnoid? the starter turns over. Can someone try to help me or giving me any ideas?