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Tahoe Suburban DRL's with High Beams Mod
Slvr Z71
post Nov 11 2007, 10:46 AM
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Scott, is this electric setup same for 05's ? Also saw you are in N/W burbs where at?
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Scott
post Nov 11 2007, 10:51 AM
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Yep, the 03 to 06 are all the same. I'm in the Long Grove area.


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Slvr Z71
post Nov 11 2007, 04:59 PM
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Cool then. something to try on a Sat afternoon then. Is it a long process or something that a electric impaired guy like me could do? I am in Hanover Park and I work in Bloomingdale
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Scott
post Nov 12 2007, 10:46 AM
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I wouold recommend downloading the FAQ and reading through then entirety a couple of times. Then put together your shopping list to ensure you can find everything. All of the lighting mods are pretty stright forward.


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bair1218
post Feb 17 2008, 07:24 PM
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so if i get this right? how can i have my drl's fogs and lb's and hb's at the same time ????


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dobie360
post Jul 7 2008, 11:32 AM
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QUOTE(Scott @ May 9 2006, 11:16 AM) [snapback]77285[/snapback]

Spector did it with sound - I did it with lights! Yep, it's pretty bright.



scott can you give me a 1,2,3 way to do these mods all in 1 shot ----with high beams on ---my fogs will go on and my d.r.l.,s as well-----i have a '05 silverado can it be done on that truck as well thanks vin.


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<a href="http://s40.photobucket.com/albums/e229/dob...nt=DSC02561.jpg" target="_blank"><img src="http://i40.photobucket.com/albums/e229/dobie360/DSC02561.jpg" border="0" alt="Photobucket"></a>









2003 z-71 pewter-with tan interior


tires are continentals-----285/50 20's zr extra load tires-------- on enkei et6's traction aa--temp. a----tread 420
electric fans mod.----------k&n air filter kit--------poweraid T.B. spacer plate---------240 amp alternator--for electric fan mod add in.---k.c. daylighters.will have plenty of juice.-----------headlight [highbeam fog//light mod] vent shades---bugshield. also have the computer upgrade from Black Bear---low and high beams are silverstars-[sylvania's] chrome grill guard--KC Daylighters

Love My Z-71

john 3:16







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carguru
post Jul 7 2008, 11:53 AM
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If you download the PDF, it gives you step by step. The mod works for '05 Silverado also....


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cforstall
post Jul 8 2008, 08:40 PM
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QUOTE(carguru @ Jul 7 2008, 12:53 PM) [snapback]202380[/snapback]

If you download the PDF, it gives you step by step. The mod works for '05 Silverado also....



I'm interested in doing the "all on" mod. (when highs are engaged HB+LB+DL+FL are all engaged) and I'm also interested in doing fog lights on with low beams but I'm having problems following the step by step instructions. Could someone post some pictures? Thanks in advance for the help.


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chiefa
post Jul 15 2008, 09:28 PM
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okay- this must be one of the longest post here- so let me add to it! I have an 02 71 Sub- I went and had every thing i needed- with the idea of doing the 4 hi, fog and drl. Well the relay did not work with the wiring diagrams for the 03 and newer. So- figured I would mess with the fogs- man what fun- my fogs were different as well! SO--- those with 02 or older- do the ground wire off the yellow wire under the fuse panel--the easy 4 hi mod! Worked great!! My fogs- worked, then didn't- as I kept messing with it--finally I got it!!! So I now have lb and hb on, fogs work with lb and hb and switch works if drl or park just like I wanted. good.gif

So-- have I missed where someone posted for the 99/02 wiring mod to make the drls work with the hb/lb/fog ?? huh.gif

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Matt
post Jul 16 2008, 05:44 AM
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Good question. For the 00-02s I don't know that I have seen anything where you can run hb/lb/fog & drls at the same time. Only the hb/lb/fogs.


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mods: Taylor Thundervolts Wires, vent visors, F@rd keys, BFG All Terrain TA ko, Manik Brush Guard, Hellwig front and rear sways, VHT flat black wheel paint

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Wilkmaster
post Sep 3 2009, 08:26 AM
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QUOTE (Scott @ Sep 28 2006, 07:53 AM) *
Please read my reply in the 4-way thread. Essentially what you have to do is reverse everything for each circuit as the earlier models switched the ground.



Forgive me if I missed this.... How can I get my foglamps to go on every time the Low-Beams are on without pushing the foglamp button, which I always forget to do. I don't want to do anything with the DRLs or High Beams, just get the foglamps to always go on with the lowbeams.

So far I have done a Diablo Sport Predator Tune (needed to be able to switch it back to stock and tinker with it so no BB), Airraid tube, K&N filter, new Bilsteins, drilled front rotors, ATX Mojave 17 Wheels, Bridgestone AT Revos, new fluids all around and the truck runs great. Next mods are Silverstars and this light trick, and a Flowmaster 70 BB.

LOVE your site. Congratulations and thanks again for any help you can give me on the lights mod.

Wilkmaster


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Scott
post Sep 3 2009, 12:22 PM
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A couple of things first. As you know, you have to manually engage the fogs everytime you cycle the ignition - Strange, but that's how they did it. Also, while they will work with the parking lights, or the low beams, the second you engage the high beams, they go off as well.

As such, if you want them only to come on automatically with the low beams as you stated, you would simply run a second dedicated lead through a relay, that is controlled by the low beam circuit.


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OmarR
post Sep 3 2009, 09:21 PM
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QUOTE (Wilkmaster @ Sep 3 2009, 07:26 AM) *
How can I get my foglamps to go on every time the Low-Beams are on without pushing the foglamp button


I did this at the BCM, underneath the steering wheel. For 03-06's:


Find the 24 gray pin connector C2.

A4 Pink/White - Headlamp low beam relay
A5 Dk Green/White - Fog lamp relay control

Just connect the 2, but use a diode with the band facing towards the pink/white wire.

Since the 2 wires are next to each other, you could take the diode, bend it into the shape of a horseshoe ("U" shape) and shove it into the 2 pins at the base of the wires, just making sure that the band does face the A4 pink/white wire.

Or you could do it the right way, solder lead wires to both sides of the diode, and in turn solder those ends to the appropriate wires listed above. Use heat shrink tubing to cover the diode, or at the very minimum, some quality 3M Super 33+ electrical tape.

All you are doing is taking the negative leg of the headlamp relay, and activating the negative leg of the foglamp relay, so no over-taxing the system. 1 amp diode will do, but you could go 3 amp if you wanted to.

Reminder: You will have no control of the foglamps when the headlamps are on. If the headlamps are on, the foglamps will ALWAYS be on.


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Scott
post Sep 3 2009, 10:48 PM
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I'm not going to bore people to death for the 100th time about diodes, but I'm not a real fan for a number of reasons.


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OmarR
post Sep 3 2009, 11:18 PM
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Scott,

I have read some of your previous posts about diodes.

To me, it seems like you are not a fan of the INCORRECT use of diodes, like shoving them into the legs of the relays of the underhood fusebox. I am completely in 100% agreement with you! Doing it that way is just simply mickey mouse, no offense to anyone else who has done this. Same with not soldering, not heat tube shrinking, or using the proper amperage. I would rather someone use additional relays than diode.

Of course, there is nothing wrong with using a relay to drive another relay. It's perfectly safe. But for me, it's too redundant and not clean enough.

That's just my opinion.


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Scott
post Sep 4 2009, 10:10 AM
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Thanks Omar, you are exactly right.

See the problem with diodes is, the way to use them properly, requires more work, and is harder for most folks than doing it the redundant relay method. The reality is, most people take the short cut route with jamming them in, if they are offered instructions on the diode method.

I am in total agreement that they are absolutely the most elegant, even actually the proper way to engineer it, but almost nobody actually does it the right way, and there is just too much temptation to take short cuts, which can cause a number of real problems. I can't tell you how many pics I've seen posted of diodes jammed in the fuse box, and to this day, I have yet to see anyone ever post of pic of doing it the right way. In my experience, the relay method is simply safer to recommend, and easier for most folks with limited experience.

That all said, with my current set up, I personally did use diodes on a couple of circuits where I had to control the flow, taking the time to remove the fusebox connectors with a pick, soldering the connections from the back side, using shrink wrap, and securing properly. However, again, if I posted how to ID the correct connections, 99% of the readers would not follow through doing all of the required best practices. As such, I feel an obligation to avoid encouraging or helping people going that route.


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thedeepfriedboot
post Sep 18 2009, 11:10 AM
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With these mods, when you are activating the DRLs and Fogs, are you grounding them like you do with the high beam mod or are you tapping the battery as an alternate source of power for the lights? The instructions dont actually say what we are doing, just how to do it. If there is a wiring diagram for this, that would be great. I know I have one in my repair book but I am unsure where the book is at the moment.

Also, I was thinking of setting up the bypass with a cabin switch so I can choose if I want the override system to turn everything on or if I want to function normally. I was just going to tap the switch into the trigger wire for the relay. Anyone tried this before? I am planning on possibly using one of the homelink buttons and a triggered flip-flop relay circuit for the full/normal mode selector switch but how I do that will be posted in another writeup when all the parts come in.


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OmarR
post Sep 18 2009, 05:33 PM
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Diode method:

You are just grounding the OEM relay.

Relay method:

You are tapping 12V for the new relay you are adding, then you are using this relay to just ground the OEM relay.


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BDPatriot13
post Feb 22 2011, 05:31 PM
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QUOTE (Scott @ Sep 28 2006, 07:53 AM) *
Please read my reply in the 4-way thread. Essentially what you have to do is reverse everything for each circuit as the earlier models switched the ground.

hey scott, I really want to be able to have my DRLs and fogs on when I turn on my Highs... any info


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topshatta
post Apr 24 2012, 09:54 AM
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QUOTE (Scott @ Sep 28 2006, 08:53 AM) *
Please read my reply in the 4-way thread. Essentially what you have to do is reverse everything for each circuit as the earlier models switched the ground.

what hid blub do you used in the drl
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