This is just a guess, but: probably because something is wrong with the wiring of your car. You should have a mechanic look at it.
Yes.
The headlight switch that has the dash light dimmer knob. The dimmer switch went bad and you can only fix it by getting another headlight switch on most cars. Some though have a separate dimmer switch.
If I understand you correctly, the dimmer dial near the headlight switch is turned down; simply turn the dimmer dial until it clicks and the lights should turn on.
AnswerIf the lights work on the flash to pass but do not work otherwise either the switch is bad or the dimmer switch is bad. I just am working on a 1995 Ranger and found the dimmer switch to be bad. I checked the headlight switch and that was good so I found the dimmer switch to be the problem. I jumped the wires after unplugging the dimmer switch and lights come on. Replace the headlight dimmer switch and good to go! Hope this helps.
have you check the tail light fuse to see if it is blown. other possiblly is the headlight switch.
Try replacing the headlight switch, it has the dimmer built into it.
On the '92 sunblrd SE the power for the lights to from fuse to headlight switch to dimmer switch to bulb, no relay involved.
check your headlight switch or dash dimmer switch to be sure you do not have them turned on.
you probably would first start out with replacing the headlight bulbs then work to the dimmer switch and electrical system from there you probably would first start out with replacing the headlight bulbs then work to the dimmer switch and electrical system from there
your headlight switch needs to be replaced. My Lincoln had the same problem, it all stems from the auto dimmer feature...replace the headlight switch (mine was 70-100 dollars) and your lights will work fine.
Turn off the dimmer for the dash which in a 1998 Explorer is to the right of the headlight switch.
Try turning headlight dash dimmer rheostat to extreme end