 Not Uncommon Problem
I know your post isn't new but it caught my eye. Your problem isn't uncommon. My 95 has 130K+ miles on it and I'm in process (weather permitting) of replacing the headlight switch for the second time - - as soon as I remember how to get the knob out of the thing. The problem manifests itself by the dash lights refusing to come on when I pull the switch out to the "headlights" position. Initially, "teasing" the switch position will make things work but things get progressively worse. The problem is relatively simple. Burned switch contacts and/or burned contacts on the dashboard wire harness connector. Twelve volts isn't much potential but enough load current flowing through high impedance shorts/junctions can develop sufficient energy to overheat wires and switch parts. The same thing often happens on fuse blocks where the "pinch" fingers of the fuse holder only make "point" contact with the fuse, creating a high impedance junction and ultmately overheating the fuse block in the immediate area. The energy (heat) developed is a function of the square of the current so problems will naturally deveop more quickly on high current loads. All that said, your switch may have burnt contacts AND/OR the dashboard wire harness mate/with connector contacts may be burnt. DON"T just swap in a new switch assembly and close things up. Check the dashboard harness connector closely. | 
