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Foglights On With High Beams

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Spurshot
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2014 SIERRA SLT FOG LIGHTS WITH HIGH BEAM HEADLIGHTS MODIFICATION This mod will let you use the fog lights on low beam same as factory. On and off with the fog light button. When the fog ligh

Spurshot
Spurshot

This was on the Duramax forum. I believe it is for a GMT 900. But the principles are likely applicable to a K2. Use this information cautiously. ------------------------------------------------------

Spurshot
Spurshot

OK, After struggling thru the schematics and online mods of past models all evening, I figured it out. This is for a Sierra and should be the same for the Silverado. It involves pushing one Diode in

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2018deepocean Enthusiast

2018deepocean

Posted
Posted (edited)

I guess diode must not have been making contact. Works great now took me a few tries and a few bent up diodes but I got it. Also diode placement is the same on 2018 jumped 10 and 18.

 

Thanks guys.:thumbs:

Edited by 2018deepocean
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  • 1 month later...
02SOMWS6 Enthusiast

02SOMWS6

Posted
Posted

Looking for some help, tried searching this thread but search doesn't do well with short search terms (like DRL).

 

I have a 2018 Sierra with LED headlights, if that matters.  I want to have my fogs on all the time, so when DRLs are on, when parking lights are on, and when both low and high beams are on.  I did the BRN10-BRN22 diode, so I have everything but when DRLs are on.  I was looking at the pinout and it looks like I can go to pin 23 (out of park)?  I assume that would turn the fogs on when the vehicle is on and out of park?  Does that work, is there a better option?  I was also thinking pin 7 (right front DRL control), but would that turn the fog lights off when I turn my right turn signal on?

  • 2 weeks later...
midwestdenaliguy Enthusiast

midwestdenaliguy

Posted
Posted

Hey guys - recently bought a 2016 Sierra Denali and joined the forum. Stumbled upon this thread while clicking around. I always gain so much from these forums, so I thought I'd give back in my first post. Here is a simple solution I made to have the fog lights automatically turn on with the day time running lights - did this with my previous truck as well (2008 Cadillac Escalade). I bought a diode and used some 14 gauge wire I had laying around. I wrapped 14 gauge wire to each end of the diode and sealed it with marine grade shrink wrap (waterproof). I then got into the engine bay fuse box and pulled the fuses for the fog lights (#49) and day time running lights (#28 or #29 - can be either, only need one). When I put the fuses back in I wedged the wire in one of the slots for the fuse connector, one end of the diode/wire goes in the fog light fuse and the other goes in the DRL fuse. Keep in mind the diode is directional (only allows current one way), so if it doesn't work at first just flip the wire around. Now anytime your DRL's are on, the fog lights will automatically come on. No need to push the fog light button. The fog lights also stay on when you turn on your brights. I attached a photo of my set up, it was taken standing over the driver side fender looking at the fuse box. Ask any questions if you got em!

2016 Sierra 1500 Fog Light Mod Diagram.JPG

midwestdenaliguy Enthusiast

midwestdenaliguy

Posted
Posted
On 7/28/2018 at 5:38 PM, 02SOMWS6 said:

Looking for some help, tried searching this thread but search doesn't do well with short search terms (like DRL).

 

I have a 2018 Sierra with LED headlights, if that matters.  I want to have my fogs on all the time, so when DRLs are on, when parking lights are on, and when both low and high beams are on.  I did the BRN10-BRN22 diode, so I have everything but when DRLs are on.  I was looking at the pinout and it looks like I can go to pin 23 (out of park)?  I assume that would turn the fogs on when the vehicle is on and out of park?  Does that work, is there a better option?  I was also thinking pin 7 (right front DRL control), but would that turn the fog lights off when I turn my right turn signal on?

Look at my previous post, I think this takes care of your issue.

  • 2 weeks later...
Speedy308 Enthusiast

Speedy308

Posted
Posted

Did this mod today, chose to do the 10/22 option. Really like it, can still turn on fogs prior to auto headlights activating, but if i start the truck at night the fogs  come on with the auto headlights and stay on with highbeams.

slj2008 Senior Enthusiast

slj2008

Posted
Posted
13 hours ago, Speedy308 said:

Did this mod today, chose to do the 10/22 option. Really like it, can still turn on fogs prior to auto headlights activating, but if i start the truck at night the fogs  come on with the auto headlights and stay on with highbeams.

were did you get the diode from ???? Thanks

  • Like 1
pgamboa Senior Enthusiast

pgamboa

Posted
Posted
were did you get the diode from ???? Thanks

You can get them from Amazon. 1N4004


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slj2008 Senior Enthusiast

slj2008

Posted
Posted
37 minutes ago, pgamboa said:


You can get them from Amazon. 1N4004


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Thank You Phil .

Speedy308 Enthusiast

Speedy308

Posted
Posted
were did you get the diode from ???? Thanks


Yup off amazon. Have 98 left over.


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Darmichar Enthusiast

Darmichar

Posted
Posted
On 8/16/2018 at 12:36 AM, Speedy308 said:

Did this mod today, chose to do the 10/22 option. Really like it, can still turn on fogs prior to auto headlights activating, but if i start the truck at night the fogs  come on with the auto headlights and stay on with highbeams.

I think you're doing what I wan to do.  Fogs do not come on with DRL, come on with headlights, stay on with high beams?  Correct?

  • Like 2
pgamboa Senior Enthusiast

pgamboa

Posted
Posted
I think you're doing what I wan to do.  Fogs do not come on with DRL, come on with headlights, stay on with high beams?  Correct?

Yep. This is the intended operation here.


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  • Like 2
Speedy308 Enthusiast

Speedy308

Posted
Posted
9 minutes ago, Darmichar said:

I think you're doing what I wan to do.  Fogs do not come on with DRL, come on with headlights, stay on with high beams?  Correct?

 Correct, come on with remote start as well. 

 

  • Like 1
Darmichar Enthusiast

Darmichar

Posted
Posted (edited)
6 minutes ago, pgamboa said:


Yep. This is the intended operation here.


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I was just starting to wade through the 45 pages, perhaps you can save me the trouble.  Which pin does the stripe on the diode 'face', 10 or 22?

 

*Edit* ...and I'm assuming it's still the same on an '18?  Just traded my '14 in last night.

Edited by Darmichar
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