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Hi I have a 2005 Ford explorer an my headlights are dimming when it's running , it does dim bright dim bright dim bright dim bright I need help

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  • Cars & Trucks Master
  • 3,679 Answers

Check the actual bulb holder's , as over time these can become brittle because of the heat from the bulb and can loose contact , other thing to check for is the head light relay , usually under hood fuse box , cover will have list of location's , another thing to check is the alternator charge rate , use a voltmeter whith engine running put neg of meter to neg pole of battery and same with the pos to pos pole , if have a reading below 13 volts have the alternator changed , hope this helps

Posted on Nov 18, 2014

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Posted on Jan 02, 2017

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SOURCE: one headlight bright, the other dim

For some reason, Toyota chooses to wire their headlamps differently than domestic cars, with dual fuses for the headlamps, and a common ground for each headlamp...The reason that the lamp was dim is the bulb was getting power thru a "backfeed" condition, due to the poor ground. The fuse may have blown due to the poor ground, also.

Posted on Nov 30, 2008

MrScary66613
  • 1990 Answers

SOURCE: dims don't work but brights do.

I believe that all of the Functions Listed above are on the Same Handle. There is a Half Moon Circuit and Switch that Goes around the Steering Shaft inside the Steering Column for this Handle. This is Malfunctioning and will need to be Replaced. Not an Easy Job. You will need to Pull the Sterring Wheel and go from their. Please Rate My Response! Thanks!

Posted on Feb 03, 2009

  • 1 Answer

SOURCE: 2004 Cavalier Day/dim lights not working

I finally got mine fixed!! It was the crossover wires between headlights(the wires that run in front of the radiator). One wire was torn into. Spliced them and taped back together. Hope this works for you!! I also used something called wire caps that help hold the spliced wires together. I found this solution on yahoo.com search engine where someone else had suggested this. My only problem was no dim lights, but all the other lights worked fine.

Posted on May 11, 2009

johnjohn2
  • 5763 Answers

SOURCE: The headlights only work on Bright. The dim

could be dimmer switch,may heat up and kill lights or maybe headlamp switch, your at a point were you are going to have to replace parts,first thing is headlamp switch, take apart but leave it pulged in when lights dont work install new switch and see if that works, this is not a diffuclt problem dont know why dealer could not pin point,anyway start there, good luck.

Posted on Oct 30, 2009

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