Lately when I go to start my 86 K5 I turn the key and it will be completely dead. I mean no starter, no lights, no radio, NOTHING. The I sit and wait for a minute or two with the switch open and all of the sudden everything turns on and I can start it. I checked the terminals and they look good and tight, I thought it was the fusible links so about a week ago I cut them of and put a piece of cable on and it seemed like that had made the problem go away but now it started doing the same again. Could it the whole cable that has gone bad? I am also suspecting the ignition switch but can a bad ignition switch kill the whole system like that, I mean even with the switch in off position normally you can still turn on the lights but when this happens everything is completely out.