fog lights not working. need help???
Thread Starter
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Elder User
Joined: May 2010
Posts: 520
Likes: 1
From: Alabama
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.
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.
Fleet Owner
Joined: Apr 2012
Posts: 27,307
Likes: 549
From: Spanaway
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
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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Hotshot
Joined: Apr 2010
Posts: 19,061
Likes: 238
From: Saratoga Springs,UT
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
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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Laughing Gas
Joined: Feb 2008
Posts: 754
Likes: 2
From: AB,Can
However, I am certain it does not work with HID conversion kits.
Fleet Owner
Joined: Apr 2012
Posts: 27,307
Likes: 549
From: Spanaway
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
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
Thread Starter
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Elder User
Joined: May 2010
Posts: 520
Likes: 1
From: Alabama
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.
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.
Logistics Pro
Joined: Mar 2007
Posts: 4,604
Likes: 4
From: Claremore, OK
Thread Starter
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Elder User
Joined: May 2010
Posts: 520
Likes: 1
From: Alabama
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.
Fleet Owner
Joined: Apr 2012
Posts: 27,307
Likes: 549
From: Spanaway
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
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