Make fog lights come on with headlights

Discussion in 'Lighting Discussion' started by frascona, Jul 25, 2014.

  1. frascona

    frascona New Member

    I have read some info online about making the fog lights come on automatically when the headlights are on. Some folks make fusebox jumpers, some run wires.

    I really would like to make the fog lights come on automatically so I do not have to manually turn them on. What is the best method? Anyone done this?
  2. squatchy

    squatchy Rockstar 3 Years 1000 Posts

    Search for 4 hi or 6 hi mods, the answer as to how is dependent on what year your truck is.

    This is how I did it on my 2000 nbs
  3. frascona

    frascona New Member

    Mine is GMC 2013

  4. squatchy

    squatchy Rockstar 3 Years 1000 Posts

    I would talk to your dealership and see if the computer can be flashed to do it. In the newer trucks there is just the fog and then a hi/low relay. Jumping them with wires or diodes like I did in the old truck isn't exactly the safest thing, but if you did it your fogs would always be on with both your hi and your low beams
  5. tbplus10

    tbplus10 Epic Member Staff Member 5+ Years 5000 Posts Platinum Contributor

    Frascona I see your from Texas, you might want to check state motor vehicle laws before doing this mod.
    The Texas motor vehicle laws contain a section on lighting restrictions that discuss lighting output, fines can get hefty when ticketed.

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