Quad Beam Headlight Mod

[Conman]

Did some quick testing this morning and made the change-
This is also working for my 2001-
{DESC.}
Now just need one of the 2003's to try it.

Looking good. I need to try this one day. Maybe when I get the rest of the mods on the truck and finally replace that odd wheel nut.....

Con

[HenryJ]

All the stressing/rushing to get this mod working for the newer models and no one trys it?

[adrenalnjunky]

I have mine done HenryJ's original on my 2000 s-10 - I have caught my DRL's turning on the lowbeams 2 times

One day I coldnt test it (wasn't stopped behind a shiny enough car to tell if they were on or not--but it seemed like they were)

so I have checked them several times like in my driveway, and they seem to work normally...

Yesterday leaving work I pull in behing a Wildlife and Fisheries truck and sure enough, I have DRL's on and the other bulb is lit up as well.

I pushed my e-brake in one detent to turn the DRL's off, and then released it and when the lights came back on, all I had were my DRL's.

then I manually turned the headlamps on,a nd the quadbeams were working, and then turned them off, and DRL's worked normally. Guess it's a random kinda thing.

[HenryJ]

I have mine done HenryJ's original on my 2000 s-10 - I have caught my DRL's turning on the lowbeams 2 times...

Bizarre, maybe I just never caught mine doing the same thing? Or I'm just not very observant

Try making the switch, disconnect the purple and ground that relay terminal.

I'd really like to see if this works for everyone!

[adrenalnjunky]

I'll do it this weekend sometime. Seems more depemdable so you arent relying on one of the wires that has a revolving potential.

[marks10cc]

a 1,000 appologies

I did it and it works fine on my '03. Quads working, AHL working, DRL working

[HenryJ]

a 1,000 appologies

I did it and it works fine on my '03. Quads working, AHL working, DRL working

Great!

Funny how when there is a problem there are two pages of posts, but when a solution is posted , we are lucky to get two posts that it worked

[Conman]

a 1,000 appologies

I did it and it works fine on my '03. Quads working, AHL working, DRL working

which way did you wire it?

thanks.
con

[HenryJ]

I did it and it works fine on my '03. Quads working, AHL working, DRL working

which way did you wire it?

The new improved method

Splice tap the green w/white wire (high beam +) attach to relay "activate +"(#85) , Splice tap the yellow wire attach to relay feed (Normally Open #30) , attach a wire ,or wires, to a good ground and connect it to the relay supply (#87) and to relay "activate - " (#86).

working on 2000 (soon), 2001, and 2003. Now all we need is a 2002 and we'll have all the models to date covered.

[marks10cc]

Great!

Funny how when there is a problem there are two pages of posts, but when a solution is posted , we are lucky to get two posts that it worked

Yeah, that's my fault. I got my truck back from the dealer on Tuesday and did the mod that night. Didn't get to see if the DRL's worked or not until Thursday morning. Now I gotta take it back into the dealer. They fixed the transmission without doing any work on it (why do they insist on saying they didn't do anything when there's clear evidence they did). I think my TCCM is shot. I can't shift into 4hi... just 2hi and 4lo

I would have finished this mod sooner, but I'm now on a fast track to turn this thing in as a lemon. My transfer case and transmission find new ways to misbehave every week now... 6 service visits in 2 weeks. 4 were TSB's (you can find them on that GM tech site, that's where I got the headlight wiring diagram). BTW, if your looking for TSB's, don't always go by the vehicle make, year, etc. There's a TSB about installing a cap for the power supply to the servo to gaurantee it 12 volts which is for all M30 transmissions, but the S-10 and Blazer are not listed, typo?

[KCustom]

I did this mod to my 2003...I made my connections on the bottom side of the fuse box to get the relay up higher and keep it away from water and mud. Neg triger to turn on the low when hi is on. Works great! I got my power for the relay from the factory head light relay output....

[fallvitals]

Splice tap the green w/white wire (high beam +) attach to relay "activate +"(#85) , Splice tap the yellow wire attach to relay feed (Normally Open #30) , attach a wire ,or wires, to a good ground and connect it to the relay supply (#87) and to relay "activate - " (#86).

Alrighty, read through this. And with this "newer" method, you don't even mess with the purple wire at all? right?

And with the #87 and #86 being a ground, can I just make a single ground wire, then splice into with the second wire to have a Y-type ground wire?
(electrical stuff is definantly not my thing, I can wing it, but always afraid ill get something backwards and blow something up, lol)

[HenryJ]

Yes

[F9K9]

...........(electrical stuff is definantly not my thing,................

Hmmmmmmmmm, I resemble that remark.

[fallvitals]

lol f9k9. I think im a bet more able with wiring then I think. Now that i think back on it I have done a lot of wiring, moe complicated things with sep by step directions, but did em

[fallvitals]

okay, last dumb question....

"You will need to take the left headlight assembly..."

Are you only doing this mod to the drivers side? So what im asking, you dont have to do it for both headlights?

[fallvitals]

Okay nevermind

I wasnt sure if it was the passanger or drivers side i needed to do... it just said left. Depends on which end your looking at it from

Actually it cost me $22 for all the wiring stuff at advance... that stuff isnt cheap... $5 for a spool of 30' wire is rediculous.

Got it all wired up, granted it took my longer then 10 minutes like some speed demons here

Turned on the low beam,, gooood.

High beam,,, failure! Just the high beam...

So i started twisting wires for a bad connection and wha la, the lows came on. So i pushed down harder on the splice connector with pliers, and it seems to be fine!


Interesting note... I dont think I have DRLs? I mean i have an 03,,, so i know I do.. but they never came on... I keep my overhead dome light off, so i thought the 3 push button trick there might kick em on, and they didnt.. so ill have to find out whats up there. but I dont really care either way.

Now that I think about it... I have my lights set to auto... so i bet thats why they dont come on..?

But unless the connections breaks.. its working for me!

Thanks for the mod info, from 6 years ago Brule

[HenryJ]

Do your self a favor and throw away those scotch locks. Go back and solder everything.

[fallvitals]

Hm, I might do that later if I have issues. For now its done, its hot, more humid/muggy then hot. lol. Or if I get bored this fall ill do it, lol. I too am a big fan of solder joints. Solderig is one thing I do pretty well. I wired up about 5 "homebrew" trail cameras (for taking pictures of deer and wildlife). anyways...

Oh my DRL question, vehicles has to be out of park

Can't wait to try em out tonight.

[HenryJ]

Do it right the first time. You will have problems. Believe me. Then you will find more reason not to fix it. Strike while the iron is hot.

[rlrnr53]

Believe Brule, you WILL have trouble with the Scotchlocks. I speak from experience, with 33 years with the WV DOH as a mechanic, I can tell you that trouble is just around the corner.

[fallvitals]

Alrighty, ill get on that soon. Never had a problem with em before, but they were never outside of the vehicle.

Quick question... had a buddy put my vehilce in drive, so i could make sure the DRLs were working. Never paid it any attention. But the DRLs are the highbeams but just MUCH less bright?

[HenryJ]

Yes.

[fallvitals]

lol, aight. I thought something was messed up, I expected the low beam to be the DRL. I couldn't check the lighting functions alone before I got started (Without getting run over)

Next nice day I'll solder the joints. Thanks for the tip.

[F9K9]

........Next nice day I'll solder the joints. Thanks for the tip.

Just ask Brule how he knows about the scotch locks. They WILL FAIL! I have got to learn how to solder correctly and go over a bunch of my stuff. I have redone my rear aux back up lights and my quad mod several times. Even coating the scotch locks with liquid tape doesn't help!

[Horsehammerr]

Did my Quad-Mod 2 years ago with scotch locks, no failure.

[F9K9]

Did my Quad-Mod 2 years ago with scotch locks, no failure.

Mark your calender form this date. Run to your local dollar generic store and pick up a large jar of the generic petroleum jelly. You're gonna need it! You have officially offended the Murphy's Law demons. Practice bending over and touching your toes.

You may never admit it publicly but, it's coming.

[rlrnr53]

Horsehammer, from my experience, if you are in much salt, your splices are on borrowed time. Heat shrink splices, or solder and uncured rubber is the way to go.

[fallvitals]

Yeah, ill have to agree you should knock on wood, lol.

I tried it out tonight on dimly lit streets, huge differance. Now once I actually try it out on a country road ill know what kind of real differance it makes, but glad I did this mod now. I saw it on the mod page but always wrote it off as something I didn't want to mess with.

[Horsehammerr]

I hear you Reed. I do own a soldering gun and would have used it the day I did the mod, but got side tracked waiting for dark to check it out. I use the big gun to fight demons.

[fallvitals]

edit. nevermind. I found this place for my buddy with an 08 sierra,

http://www.mrtaillight.com/product_info ... 67fd0de14b


They even have an s10 kit for $13 also... had I known that before hand, I might have just got it. I paid $22 for the stuff from advance to do mine. Granted im sure we had the stuff, but finding it was the pain.

[Smallblock]

I did this to my 02 blazer last week. I thought it was working as planned but today I realized my highbeams are on with my drls. I just grounded the yellow wire. What did I do wrong?

[HenryJ]

You did not add the relay?

http://www.s-10crewcab.net/HenryJ/quad.html

[Smallblock]

No,..didn't use a relay. I thought my blazer had low beam DRLs so all I had to do was ground the yellow wire?
Would installing the relay fix my problem?

[F9K9]

...........Would installing the relay fix my problem?

Yes, it will. It's been a number of years but, I do remember that this should be done on the driver's side. I grounded the same wire that you did and had the same result.

[Smallblock]

its a 20/30a relay heavy enough?

[F9K9]

its a 20/30a relay heavy enough?

Yep

[Smallblock]

I got my relay wired up and it didn't work. I'm guessing I need to swap wire 30 and wire 87.

[HenryJ]

I'm guessing I need to swap wire 30 and wire 87.

Bad guess. Swapping those will change nothing.
Check your grounds and make sure that you solder the connections that were tapped. Do not use scotch-locs. Crimp connectors are a mistake.

[Smallblock]

Finally had time to tackle this again today. Ditched the crimp on connecters and just soldered and shrink wrapped my wires instead...works now.

[HenryJ]

If you do enable the DRL, that purple wire is going to have all four lights on during DRL operation. That is why I switched to the green/white wire. IIRC

[_STUCKY]

So, I let me get this straight...

HenryJ wrote:
Splice tap the green w/white wire (high beam +) attach to relay "activate +"(#85) , Splice tap the yellow wire attach to relay feed (Normally Open #30) , attach a wire ,or wires, to a good ground and connect it to the relay supply (#87) and to relay "activate - " (#86).

By "splice tap" you are referring to using a scotch lock to basically "Y" off of the green/white and yellow wires, connecting them to the relay, and grounding the other 2 terminals on the relay?

And I see no mention of an '04 model?

HenryJ wrote:
working on 2000 (soon), 2001, and 2003. Now all we need is a 2002 and we'll have all the models to date covered.

I'm planning to do this tomorrow at some point.

[HenryJ]

Solder and heat shrink or liquid tape. Save the headache that is scotch locks.

[_STUCKY]

whoa! That was fast Brule! Lol

Yea those things are junk. But that's the concept, correct?

[HenryJ]

Yup.

[_STUCKY]

Thank you!

[_STUCKY]

It all seemed to be working just fine.

Although, my lady friend says it took me longer than 10 minutes. She is a champ, though. She sat in the truck while I was doing all the wiring.

[HenryJ]

Sweet. Now swap the highs to the lows with a trim and install a pair of Toshiba HIR in the highs for some real light.

[_STUCKY]

I did that a while back when I had a low beam go out.

[HenryJ]

All set

[LoneWolf04]

Alright I'm bringing this thread back up because I can get the Quad Beam Mod to work with the DRLs enabled as shown in the MODs page on this site.

Now my question is, has anyone done the Quad Beam Mod and also disabling the DRLs? I understand I need to reroute pin 86 on the relay to the high beam negative (purple wire), but what I am trying to understand is I keep seeing mention of a DRL relay behind the brake pedal under the carpet that I cannot locate for the life of me. I've tore all the carpet back and pulled a lot of the electrical tape apart and still have yet to find it. I have only found 1 picture that the link was still alive and it clearly shows where it should be, but I do not have it. I have an '02 crew and am wondering if this relay they used to put in the carpet is not the relay in the fuse box under the hood now? Anyone have any experience doing both of these mods? Thanks

[F9K9]

Alright I'm bringing this thread back up because I can get the Quad Beam Mod to work with the DRLs enabled as shown in the MODs page on this site.

Now my question is, has anyone done the Quad Beam Mod and also disabling the DRLs? I understand I need to reroute pin 86 on the relay to the high beam negative (purple wire), but what I am trying to understand is I keep seeing mention of a DRL relay behind the brake pedal under the carpet that I cannot locate for the life of me. I've tore all the carpet back and pulled a lot of the electrical tape apart and still have yet to find it. I have only found 1 picture that the link was still alive and it clearly shows where it should be, but I do not have it. I have an '02 crew and am wondering if this relay they used to put in the carpet is not the relay in the fuse box under the hood now? Anyone have any experience doing both of these mods? Thanks

I've run this mod for almost ten yrs. That "under the brake relay" thing is for ZR2s. I can tell you that all the work is done on the driver's side headlight. A relay is required but, you need to provide the relay.

[LoneWolf04]

Alright I'm bringing this thread back up because I can get the Quad Beam Mod to work with the DRLs enabled as shown in the MODs page on this site.

Now my question is, has anyone done the Quad Beam Mod and also disabling the DRLs? I understand I need to reroute pin 86 on the relay to the high beam negative (purple wire), but what I am trying to understand is I keep seeing mention of a DRL relay behind the brake pedal under the carpet that I cannot locate for the life of me. I've tore all the carpet back and pulled a lot of the electrical tape apart and still have yet to find it. I have only found 1 picture that the link was still alive and it clearly shows where it should be, but I do not have it. I have an '02 crew and am wondering if this relay they used to put in the carpet is not the relay in the fuse box under the hood now? Anyone have any experience doing both of these mods? Thanks

I've run this mod for almost ten yrs. That "under the brake relay" thing is for ZR2s. I can tell you that all the work is done on the driver's side headlight. A relay is required but, you need to provide the relay.

I have the quad beam working with the automatic headlights disabled just fine by using the relay out by the headlight. My hope was that the relay by the brake I could tap into which would 1) disable the factory DRLs and 2) hook up a different set of lights to run off the relay as the DRLs in place of the factory.

It seems after doing some more investigation. People have been removing the grounding wire out of the BCM for the DRL to disable them. Which in turn, I could substitute my own ground wire for another light system into that slot and have it work how I want it.

[rockinjranch]

Tach's cab quadbeam mod page wrote:
Image

Splice tap the green w/white wire (high beam +) attach to relay "activate +"(#85) , Splice tap the yellow wire attach to relay feed (Normally Open #30) , attach a wire ,or wires, to a good ground and connect it to the relay supply (#87) and to relay "activate - " (#86).

noticed last night that my high beams are on full intensity for DRL when shifted to Drive, go out in Park. how strange , I have my DRL's disconnected at the relay (removed) jumper wire between 30 and 87a to maintain the closed circuit, thinking I either need to remove the jumper or connect the purple to 86 instead of ground.......................Any takers on this
02, AHL disabled, DRL disabled(H.B. low intensity) quad mod wired with 86 & 87 to ground

[rockinjranch]

the last paragraph is mine,i meant to put the first in quotes Keith

[carguypat]

This response is mostly for the google searchers. When I first started trying to figure out the mod I used this thread to figure it out. When I did it I made a video. I know it would have been much easier for me If I had this video when I did it.
https://www.youtube.com/watch?v=LW0djDnpvEo

[HenryJ]

Very nice and should be very helpful. I am sure reading through they will sort out the differences that the reduced intensity DRL throw into the mix Not a big deal to run full power DRL all the time I guess