anti theft system is bad
Answer I had a similar problem when I put a CD player in my 92 explorer. The problem was that somehow I used the hot wire from the headlights. I simply just rewired the power wire and problem solved. First of all I would check the power source. If you didn't use a wiring harness some of the 12v power is discontinued when you turn the headlights on. Using either a voltmeter or testlight check for a constant power source. THE MOST COMMON CAUSE OF THIS IS CONNECTING YOU VEHICLES DASH LIGHT WIRE TO THE GROUND ON THE STEREO
I just had this same problem with my 1998 VW Jetta. My parking brake light came on one day, but only half illuminated. Shortly after my windshield wipers and headlights stopped working. My radio works but the fans don't work either. I just found a thread which seems to point the problem at the ignition switch: http://car.justanswer.com/volkswagen/6uht-1998-volkswagen-jetta-headlights
I had the same problem, and it turned out to be a short in the wiring. Mine had the Cruise Control located in the steering wheel and when I turned it off...the lights worked fine.
This is probably caused by leaving your Hazard Lights on, but may also be an electrical short. Have it checked by an automotive electrical technician if you have tried to turn off the Hazard Lights switch and they still stay on
Problem Solved: The previous owner installed the incorrect tail/turn/stop light bulbs. The bulbs had only one filiment instead of two. All is working perfectly now. Don't go to Walmart to find auto parts. Go to a REAL part store!
Could be a linkage problem..
I would suspect the dimmer switch or "combination switch".
Most headlight circuit breakers are located in the headlight switches. Headlights are on a circuit breaker automatic reset so headlights don't go out if there is a problem and will blink on and off to get you off the road safely until you can fix the problem. Look for a short in the wiring between the headlight switch and the headlights themselves.
i was wondering whether the switch at the parking brake could affect this problem.
TRY CHECKING TO SEE IF YOU HAVE A HIGH BEAM HEADLIGHT OUT. tHIS WILL CAUSE THE PROBLEM YOU HAVE.
I had that issue with my Cavalier and it turned out to be a fuel pump problem. I would check with your local mechanic.
If the headlights flash on and off, there may be a problem with the bulbs or fuses. There may also be a problem with the battery connections or wiring.
What problem, what year, and what do you need to know?
Bad socket? Bad ground? Problem in steering column switch?
It's when the cars headlights are blurry and the glass is not clean. It happens after time because of the sunlight and other things affecting the clarity of the class. There are special cleaning aids used to fix the problem.
I had a problem with my headlights going off, not the high beams. Replaced the rectangular silver can thingy at the fuse panel under the dash on the drivers side. I put a higher rated one in, which is a no no, but it solved the problem of the headlights going out.
There could be a problem with the power of common ground to the Cavalier light and sun roof. Check the fuses and wiring for the problem.