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fog lights not working. need help???

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Old 05-21-2012, 02:03 AM
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fog lights not working. need help???

i cant seem to get my fog lights to work. i checked am both bulbs are good. i did pull out the headlight switch. i checked fuse 43 an its good. i popped dash out an checked wires to headlight switch an found the wire for the fog lights,yellow wire on my 05. its getting power when i pull the headlight switch out to turn on fog lights. pulled plugs of of fog lights an getting no power to them.

they use to work. i put in some HID headlights an they still worked. then i put some led's in my instrument cluster an sometimes they would work an sometimes not. now they wont come on at all.

thanks for any an all help.
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Old 05-21-2012, 02:39 AM
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Both not working? How do you know both HID lights are still good? Do you have a spare HID light or a spare ballast to check?
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Old 05-21-2012, 05:07 AM
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If you are getting power to the bulbs, but no light from them, then it kinda / hasta be the bulb(s) doesn't it?
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Old 05-21-2012, 08:43 AM
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It has factory bulbs in it now. It's getting no Power to the bulbs. I don't have the HID kit in it yet.
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Old 05-21-2012, 12:45 PM
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The ignition has to be on for the fog lights to be on.
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Old 05-21-2012, 01:14 PM
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Had the truck runnin bc I was tryin the hi idle mod I had just done to make sure it was workin correctly.
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Old 05-22-2012, 12:05 AM
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Ok I may have an answer
You installed an LED light in the high beam indicator I would bet.
I was reading somewhere that:
The fog lights use the ground though the high bean
indicator bulb so that when you have 12V (high bean on) the relay for the
for lights does not have a ground and drops out. If you used LEDs in the dash
lights the LED diode will only power to flow one way like a check valve.
You may be able to switch the way the LED is installed and that may work or not.
Your just going to have to try.
Let us know what you find.
Sean
P.S. I could always be wrong
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Old 05-22-2012, 12:14 AM
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Quote:
Originally Posted by Yahiko View Post
Ok I may have an answer
You installed an LED light in the high beam indicator I would bet.
I was reading somewhere that:
The fog lights use the ground though the high bean
indicator bulb so that when you have 12V (high bean on) the relay for the
for lights does not have a ground and drops out. If you used LEDs in the dash
lights the LED diode will only power to flow one way like a check valve.
You may be able to switch the way the LED is installed and that may work or not.
Your just going to have to try.
Let us know what you find.
Sean
P.S. I could always be wrong

This how my 03 is^^^^^^^^

When High Beam headlights are on the Fog Lamps wont come on

But when I switch to Low Beam Headlights the Fog Lights will work
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Old 05-22-2012, 01:18 AM
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Quote:
Originally Posted by BLADE35 View Post
This how my 03 is^^^^^^^^

When High Beam headlights are on the Fog Lamps wont come on

But when I switch to Low Beam Headlights the Fog Lights will work
Just to add to this.... If you get a Britebox, they have a kit that allows the factory fog/driving lights to stay on when your lights are switched to highbeam as well. Pretty handy if you drive at night in the country!

However, I am certain it does not work with HID conversion kits.
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Old 05-22-2012, 01:23 AM
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Well I made Big Kitty move. She was sitting on the book.She was not happy
How ever I get get a shot of the page in the wiring diagram book

This shows what I was talking about
Also this is Bella aka Big Kitty


Hope this helps to explain things better
Sean
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Old 05-22-2012, 10:23 AM
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So if I'm Thinkin correctly. The led I put in my high beam indicator is what's not letting my fog lights work.

If that's the case I should b able to do the fog light mod where you cut the light at the relay that's on. Ack of the fuse box. Ground it. An all should be good again.

If this sounds right please let me know. I don't want to cut the wire an it not work.
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Old 05-22-2012, 03:33 PM
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Yes that should work.

Also if you take that LGBK wire where it crosses over to the
point at S203 and ground it on the fog side. Just make sure that
the wire size is right.
Sean
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Old 05-22-2012, 03:47 PM
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(cough, from the tech folder)

S&S Diversified
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Old 05-22-2012, 04:09 PM
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Quote:
Originally Posted by zhilton View Post
(cough, from the tech folder)

S&S Diversified
Thanks for that link. I knew I had seen that on here somewhere.
Will b doin that this weekend an hope I fixes my fog lights.
If it does. Then goin to put my 55w 8000k HID in them. Same as what's in my headlights.
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Old 05-22-2012, 04:27 PM
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So that is where I had seen that.
But yes that is a very easy job.
Only 2 beers ? Hmm You will have to
find more work on the truck to finish that 6pack.

BTW anyone know about the info display mod to keep it bright all the time?
Sean
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