Quote “DRL's + headlights simultaneously..?
you can put a diode between your parking light relay and your drl relay to have the drls on with the headlights. during the day, on auto, only the drls are on. if this is what you're looking for, let me know, i'll tell you which relay contacts to jump between, and which way the diode goes”

found this on the forum but it shows the diagram for a H3.
I would like to know how to do it on a2008 H2
My fuse box layout is different as I can find the park light relay but no FRL relay

I include the pics with the diagram that I found on the forum
Later today when I get back at my shop I’ll take a picture of the fuse box in my hummer


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Here’s my fuse box under the hood.
Marked in red is my park light relay now I’m looking for the DRL’s relay.
I know we got some die-hard experts on here so maybe. 🙏🏻

 

Did it years ago and it works great!

Your photos show 03-07 H2 fuse box, not H3.

The one you photographed is 08. Did they change the fuse box in 08-09?

 

Thank you clearing that up on the 03-07 years.
I have no idea but I think the 08 and 09 models having a different fuse box.
I hate to re-wire the DRL’s and bring in their switch if the possibility is there through the fuse box with a diode.

 

Found the thread from a few years ago.
Will jump on it tomorrow.

https://www.hummerforums.com/forum/hummer-h2-8/hummer-h2-fog-light-diode-location-40662/

 

https://www.hummerforums.com/forum/h...ly-1035/page9/

last few post show how I did mine, includes pictures and links to the items I used,

The 08 and 09 fuse box is different,

Neal