It sounds like you have a bad headlamp switch ---but I am not sure ,are you able to remove the headlamp switch to do some testing with me ---if you are, then tell me when your ready and we will start ----if you are not able ---A headlamp switch is my best guess here , I do not think its a fuse ,, when a fuse is bad ,it stays bad ,, it will not let something work sometimes and not other times ..
we can go back and fourth on this page
Ok ---now I do not THINK its the headlamp switch I KNOW its the headlamp switch ----how do you replace it ??--lol-----that was fifteen years ago ---lets see---
oh yes its starting to come back to me ---pull the headlamp switch knob out like your turning on the headlamps---the knob on the end of the metal shaft can be pulled off with a pick --there is a notch in the knob --in that notch is a metal tab,,use your pick and pull that metal tab towards you and at the same time pull off the knob ----now thats the knob is off ---at the end of the shaft is the black ring protruding out ---this is a big nut ,unscrew it ,,it holds the headlamp switch to the dash panel -----now you can pull back on the dash panel starting at the lower corner of it and you can reach behind it to grab the headlamp switch ,,, unplug it ,,, and now its out -----now on the headlamp switch is a push a little push button --this is to get the metal rod out ---push on the button and pull the rod out ---put the rod in the new switch and install it ---thats it