The SUPER EASY 4-Hi mod for 00-02 vehicles

[jESse]

So, does this mod not work on 04'? I just did this to my 04' Tahoe and it blew the low fuses...........

Am I missing something?

no. this is for the 00-02's. read the how to on the one for the 03+'s

 

[Grocery Getter]

no. this is for the 00-02's. read the how to on the one for the 03+'s

Damn, that sucks. I thought 00-04 were the same set up. I saw that write up, been too lazy to get the diodes.

 

[ypsetihw]

sweet gonna do this later today maybe, looks like a breeze - Thanks!

edit: Just did this today and it took like 2 mins, hardest part was putting the terminal on the wire lol . . . thanks!

 

[ypsetihw]

can you somehow bridge the high beams into the DRLs so that they come on with the highs too, kindof like an upper high 6 mod?


EDIT: I did a bunch of research and thought I had it nailed, so I went ahead and spliced the hotside high-beams into the hotside of the DRLs . . . blew the left headlamp fuse immediately. Fortunately I had another 15A fuse on hand and was able to yank the wire and patch it up. Anyway, don't do this!

 

[ypsetihw]

Interesting note, doing this mod causes the "flash to pass" high beams (headlights OFF, pull left stick towards you to flash the highs) to trigger both the High and Low beams for a "super flash"

here's my splice job:

and the diagonal brace you can ground it to (yellow tape), there is a little space to pass the wire through the fabric heat shield behind the fan:

Update: I've been playing with a way to provide power to the DRLs when the headlamps are on. I made the mistake of jumping the high and low power TWICE blowing the left headlamp fuse, but that was an easy fix. Based on what I can find and measure with the multimeter, I think you can ground the headlamp to the positive side of the DRL instead of to the brace, meaning that the DRL will get pass-through current and stay ON when the headlights are ON or when you use flash to pass.

 

[ypsetihw]

GOT IT! It finally worked and I wrote it up . . .


4-Low/6-High Mod Here!

 

[JAToro78]

I tied my fogs Into my parking light behind the light switch to where any time my headlight are my fogs are and they stay on with the highbeams an there you go hi-6

How did you tie your fogs into the parking lights? I somewhat wiring experienced but would like to know what wires to tap into. Thanks

 

[Robert.K]

good question, Im in the same boat. But Im also add hid fog for some serious light out front! Want to get the z71 front valance and retrofit some projectors in the fogs. At least i think its possible............

 

[brucebly]

Just finished this mod. Has anyone figured out how to include the fog lights in this without using a diode? Is it possible to ground one of those wires also?

 

[withac]

Here's the link to an easy fog light mod

http://www.tahoeyukonforum.com/forum/showthread.php?t=974

 

[andrewmoore13]

awesome, just did this and couldn't be happier.

 

[Dvldogyut]

Super easy is right, worked very well.

 

[boostedgsxr1k]

very nice.. I always wanted to know how to do it THANKS!!!!

 

[Riff Raff]

just did this took all of 2 minutes to do

 

[jutte73]

anyone figure out a way to do this with HID's as highs and lows?? i have an 02, but read earlier someone had HID highs and lows tried this and was unable to get the HIDs to work. maybe with the harness from DDM would make it work... just seeing if anyone knows..

thanks!

 

[dwmmatt23]

Sweet, have everything in the garage to do this when i get home. Thanks

 

[Rivieraracing]

So I just tried the 4 hi mod on my '02 denali and it isn't working! I first grounded the yellow wire at the drivers side low beam and it worked like normal, the lows would turn off when the highs were on. So I grounded the passenger side one as well so both were grounded and then the low wouldn't work at all, just the highs when I turned them on! I am still experimenting with them right now but was wondering if anyone else encountered my problem. I am also running DDM's HIDs and I know that I had to reverse polarity to get them to work so not sure if that's part of the problem.
Anybody with some ideas?

---------- Post added at 09:44 AM ---------- Previous post was at 09:39 AM ----------

Well, I spoke too soon!! I went out and unhooked the drivers side one and left the passenger side one on and it works great!! Thanks for this writeup guys, and if any of you are having a hard time making this work, try grounding just the passenger low yellow wire and see if that makes it work!!

 

[jutte73]

you also need to make sure you have a really good ground. when i first did mine it didnt work then i got some sand paper out and sanded the paint away where i wanted to ground the wire hooked it back up and workked like a champ!

 

[DaRosa218]

Worked great!!!! Thanks for the great write up and idea

 

[ScottyBoy]

This is how I connected mine, instead of a splice right behind each headlight. I connected beneath the underhood fuse panel, for a much cleaner finished look. Here is where the yellow ground wires for the headlights meet up with the fuse/junction block.
Just cut it off from the junction block, solder on a piece of wire with a ring terminal and connect it to a ground bolt.

Now cover the solder joint with heat shrink tubing.

And just put a ring terminal on the end of the wire and you can connect it to this fender bolt directly beneath the fuse block.