Headlights wont work on a 2004 mazda 6\r\ntailights and flashers work , had both bulbs replaced less than a month ago, just had a new alternator installed now no headlights help
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it is possible that the after market radio is the problem
unless it is installed correctly it may be draining power from the dash wiring or using that schematics as an earth incorrectly
fitting after market radios in modern cars is not a diy effort as the original radios are now attached to the ECM of the car and fitting the radio incorrectly will cause problems
InstructionsOpen the rear deck lid on the Mazda 6.Carefully remove the plastic finishing cover from the license plate light housing, using a small flat-head screwdriver to release the locking tabs. Pull the cover downward and off of the deck lid, exposing the license plate bulb. Remove the old light bulb from the license plate bulb socket by hand. Wrap your new one in a paper towel and do not touch the bulb with your bare fingers. Insert the new bulb into the light socket. Install the finishing cover onto the light housing and push it upward until it clicks and locks into place.Repeat Steps 2 and 3 to complete the LED light conversion on the opposite side of the deck lid. Test the new bulbs by turning on the headlights on the Mazda 6. Mercedes Parts.
it is possible that the low beam headlight bulbs went bad at the same time, need to check for power at the headlight connections. if no power it is possible that you could have blown a fuse since the car has had other electrical issues. also will want to check the dimmer switch on the steering column, it to may be bad not allowing the low beams to work.
You can open the hood and you should be able to see the headlight compartment, right between your radiator on the front. Most Mazda's have a plastic cover on them. Simply turn the cover or pull it out. The light bulb is inside that compartment. Hope that helps you.
First check the fuses located inside the hood or under the dash. If any are burned replace them. If not, then replace both headlight bulbs and try it. If that is not the problem check the dimmer switch. The best and easiest way to find out is to take the car for a trouble code free at most autoparts stores.
It may have something to do with your headlights, but my first thought is they are just a symptom of another problem.
I'd check on the alternator. If the ALT fails, a good battery will keep the car running for quite a while. Sometimes the first symptoms are the dimming of the headlights. So:
Make sure belts are tight.
Get a meter and test the output voltage while its running (be careful when doing this).
Check the voltage at the battery when stopped and when running.
Same thing with headlights on and off.
Get back to me with the results. Once the alternator is ruled out we can check a possible headlight problem. But this way, at least you won't be stranded somewhere with a dead battery.
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