Hi All!

On occasion, when I turn the key,  I hear no fuel pump and I only get one
click (like a breaker opening) at this time the door panel lights are real
dim and the headlights do not burn.  Usually at 30-120 seconds the lights
come on bright, I hear the fuel pump, and am  then allowed to complete the
ignition process-starter activates, ect.  Yesterday the Explorer would not
start until I disconnected the battery and let whatever it is reset. Any
ideas?  Does this sound like the fuel safety switch?  I did not know where
it was located until last night after I had a successful start-at which
point the fuel safety switch was in its proper position.  I'll know where to
look for the switch next time, but if it is not the switch that means I'm
still looking for a breaker, relay, or something similar that does a 99%
disconnect of the ignition/battery.
Thanks!

dan