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1999-2007 General Questions General questions related to 1999-2007 Super Duty trucks. If it doesn't fit the other categories, post it here. Gas engine discussion that pertains to all models is allowed. Specific gas engine questions should use the Gas Engines forum.

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Old 10-09-2009, 11:57 PM   #1 (permalink)
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Dim Headlights

I couldn't find anyone else with this problem, so here it is. My headlights are extremely dim. Everywhere I go I have to put the hi-beams on just to see in front of me. If I use the low-beam it looks a candle in my headlights. I am thinking there is not enough power to the bulbs, I purchased sylvania silverstar- ultrastars and they look the same, dim. Any ideas??
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Old 10-10-2009, 12:24 AM   #2 (permalink)
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Are the headlight lenses cloudy and/or yellow looking? Badly oxidized headlight lenses can really impact a headlight's light output.
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Old 10-10-2009, 12:00 PM   #3 (permalink)
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I had after market lights installed and when they were burning out they got dimmer and dimmer.I do not remember the brand of lamp-pull your lamp out and check it.
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Old 10-10-2009, 12:51 PM   #4 (permalink)
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Quote:
Originally Posted by guardcasey View Post
I couldn't find anyone else with this problem, so here it is. My headlights are extremely dim. Everywhere I go I have to put the hi-beams on just to see in front of me. If I use the low-beam it looks a candle in my headlights. I am thinking there is not enough power to the bulbs, I purchased sylvania silverstar- ultrastars and they look the same, dim. Any ideas??

It would help if you fill in your signature so we know what year truck you have.
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Old 10-11-2009, 12:11 PM   #5 (permalink)
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It is a 2000 CC LB 4x4. The lens covers are clear and not yellow or cloudy in any way. I have one new bulb in and one old one. they look exactly the same when driving on low beam. and it impossible to see them in front of the car unless pitch black. They emit a dull orange color
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Old 10-11-2009, 12:25 PM   #6 (permalink)
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Could be that a wire is partly broken and not getting all of the power to the lights, the socket for the lights are dirty and not letting the power pass from the wires to the lights.
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Old 10-11-2009, 12:29 PM   #7 (permalink)
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I think it is a bad ground on the headlights, I had it happen on a gasser. The ground connection had gotton battery acid slopped on it and was very bad. Took everything apart and cleaned it, replaced a section of deteriorated wire (from battery acid) and all was fine after that.
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Old 10-11-2009, 12:37 PM   #8 (permalink)
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I have been doing some searching on here for a while for the same reason, although my truck doesn't seem as bad as you describe. The reason your aftermarket bulbs are the same brightness as you old ones is ford used very small wires in their headlight harness and it doesn't send enough up to the lights to power them. Another reason is the type of bulb they used and the bucket design on our year just doesn't put out enough. There is a few people spending big bucks and doing it right putting the upgraded harness in and the upgraded headlight buckets or going with the '05 front clip look with those housings. There is also a mod you can do once you get the upgraded harness to run the highbeam element and the lowbeam element at the same time. There is also an HID system you can upgrade to I think but also kind of spendy and I don't know if it will work with the oldschool buckets.

Since I am a cheapskate I just mounted some pretty good driving lights in the stock driving/fog light location and aimed them about where the lowbeams should shine. For the highbeams I am planning on fabbing up a prerunner bar of sorts and mounting a couple bigger lights to flood the night with light.

sorry for the long winded post. All this stuff I learned from this site, although the search function can be daunting, the info is there, you just have to find it. Let me know what you end up doing and if it worked or not.
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Old 10-13-2009, 10:48 PM   #9 (permalink)
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Make sure that each of the three wires in that go into the plug , it could be blue or black are all the way in.
I just lost one of my lights, normal when running them for the most part 24/7 and after replacing them with new lights, one of them was very dim, found that the middle wire was not all the way in, after pushing it all the way in ,,,, light at full bright.

Check the wires to make sure that they are all the way in.
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