Headed home from a function last night with the high beams on and after 15 mins of driving the lights all went dead. Hit my aux lighting which is wired separately and off the battery so we wouldn't run off a embankment and within about 15 seconds or so all the lights came back on. I had this happen long ago on a crusty old F250 and from what I understand on that one anyhow, the switch has the circuit breaker built into it. It heats up,kicks out and then returns back to on after it cools and resets. Im doubting this, but is the factory switch in my 91 set up the same way? BTW, Ive had this thing 2+ years, been thru the grounds and light plugs and sockets etc and this is a first of lights out. Not much fun on a moonless night on a mountain road.