DIY: Make 2015-2017 LS/LT headlights operate like a LTZ headlight (LED as DRL vice low beams)

[Tylus]

is there a way to just disable the DRLs !

only thing I can think of would be to unplug the associated wire to the DRL

they don't serve any function with regard to night-time driving and turn signals.

worst case would be they trigger a burnt out bulb indication. Page 1 of this thread has the drawing that shows what wire to disconnect. easy to reconnect if needed. just make sure to wrap the wire (seal) with electrical tape to prevent a short

 

[Kyle Goodman]

Very close to being ready.


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Hey Cmatt! I sincerely apologize if I'm bugging you!! I know you're probably swamped with other stuff so not trying to add to your stress by any means lol. Sent you an email and a PM on here, but whenever you do get the chance I would love to purchase the harnesses for the fog lights, LED DRL strip and the DL3 Mirror harnesses. Just let me know whenever you are available. Thank you so much!!!!!

Kyle

 

[cmatt]

Hey Cmatt! I sincerely apologize if I'm bugging you!! I know you're probably swamped with other stuff so not trying to add to your stress by any means lol. Sent you an email and a PM on here, but whenever you do get the chance I would love to purchase the harnesses for the fog lights, LED DRL strip and the DL3 Mirror harnesses. Just let me know whenever you are available. Thank you so much!!!!!

Kyle

Not bugging at all. I’ll respond to your email. My day job has kept me very busy. I’m on the Gulf coast and the last few days we’ve been getting ready for hurricane Sally.


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[cmatt]

Just an update on the newest version of the DRL harness. I’ve got it out to a member for installation and testing. As soon as things are verified, it will be available. I do have an early version that’s been installed and working in a customers 2015 Suburban without issue for 6 months. So this version should perform as expected.

I do want to set expectations with regards to pricing. I typically discuss it via email directly with the customer. It will be in line with a competitor’s solution. However, this version won’t make you compromise with the headlight functionality and, frankly, is of superior build quality. The parts cost is higher and a large amount of labor is required to build. Countless hours have been spent researching, sourcing parts and building prototypes.

The original DRL pigtails will still be offered at their same price.

I will reiterate about the LED strip brightness on 2015-2017 factory headlight assemblies. Their brightness cannot be changed. GM has them built this way.


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[RST Dana]

Just an update on the newest version of the DRL harness. I’ve got it out to a member for installation and testing. As soon as things are verified, it will be available. I do have an early version that’s been installed and working in a customers 2015 Suburban without issue for 6 months. So this version should perform as expected.

I do want to set expectations with regards to pricing. I typically discuss it via email directly with the customer. It will be in line with a competitor’s solution. However, this version won’t make you compromise with the headlight functionality and, frankly, is of superior build quality. The parts cost is higher and a large amount of labor is required to build. Countless hours have been spent researching, sourcing parts and building prototypes.

The original DRL pigtails will still be offered at their same price.

I will reiterate about the LED strip brightness on 2015-2017 factory headlight assemblies. Their brightness cannot be changed. GM has them built this way.


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Is your latest version better than what I have?

 

[cmatt]

Is your latest version better than what I have?

You have the DRL pigtails, correct? It’s been a while and I can’t quite remember. If so, then I would say it is better because it gives LTZ headlight functionality.


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[RST Dana]

You have the DRL pigtails, correct? It’s been a while and I can’t quite remember. If so, then I would say it is better because it gives LTZ headlight functionality.


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I think so. It does appear like I have the strip as DDL, but not as bright as the real deal.

 

[bradac]

Hey Guys,

so I installed CMatt's latest harness and I'm happy to report it has all functions as described.

Supports:

LED stripe on remote start
Parking Lights
Automatic on when vehicle is in drive

I took it a step further about a year ago by installing the standard 2018 headlights that have the brighter LED light bar, and I have full LED brightness. I'm going to unload a video later to show the results.

great work Matt. This is a photo of my car in drive. It was super sunny so it's harder to see but it's working great

 

[NappyBoy]

I emailed matt a while ago still havent got any replay

 

[cmatt]

View attachment 257900 Hey Guys,

so I installed CMatt's latest harness and I'm happy to report it has all functions as described.

Supports:

LED stripe on remote start
Parking Lights
Automatic on when vehicle is in drive

I took it a step further about a year ago by installing the standard 2018 headlights that have the brighter LED light bar, and I have full LED brightness. I'm going to unload a video later to show the results.

great work Matt. This is a photo of my car in drive. It was super sunny so it's harder to see but it's working great

View attachment 257898

Thanks Bradley! I appreciate you helping me test this harness with the 2018+ headlights.

 

[cmatt]

I emailed matt a while ago still havent got any replay

I believe you emailed me Wednesday morning. I replied a few minutes ago.

 

[cmatt]

I live on the Gulf coast in the area hit by hurricane Sallie early Wednesday morning. Power is coming back and roads are being cleared, but data/internet is still down including me. We were certainly lucky compared to others. I appreciate everyone's patience.

 

[cmatt]

So now that things are verified, I'm ready to offer the newest DRL harness. It will give LTZ headlight behavior to 2015-2017 LS & LT Tahoes and Suburbans with the exception of the LED strips' ability to change brightness levels.

To inquire, please email me at [email protected]. This will help me keep things organized. Payment for the harness will reserve your place in the order queue. For those of you who previously got the DRL pigtails, I am offering a $25 discount (via core refund). Once the pigtails are received back and verified to be in acceptable condition, credit will be issued.

 

[NappyBoy]

So now that things are verified, I'm ready to offer the newest DRL harness. It will give LTZ headlight behavior to 2015-2017 LS & LT Tahoes and Suburbans with the exception of the LED strips' ability to change brightness levels.

To inquire, please email me at [email protected]. This will help me keep things organized. Payment for the harness will reserve your place in the order queue. For those of you who previously got the DRL pigtails, I am offering a $25 discount (via core refund). Once the pigtails are received back and verified to be in acceptable condition, credit will be issued.

will i lose the parking light option like the old pigtails ?

 

[GranPrix]

...I will reiterate about the LED strip brightness on 2015-2017 factory headlight assemblies. Their brightness cannot be changed. GM has them built this way.

Matt is there a way around this? Is the brightness a dictated by a combo between the headlight housings and a control module?

 

[GranPrix]

View attachment 257900 Hey Guys,

so I installed CMatt's latest harness and I'm happy to report it has all functions as described.

Supports:

LED stripe on remote start
Parking Lights
Automatic on when vehicle is in drive

I took it a step further about a year ago by installing the standard 2018 headlights that have the brighter LED light bar, and I have full LED brightness. I'm going to unload a video later to show the results.

great work Matt. This is a photo of my car in drive. It was super sunny so it's harder to see but it's working great

View attachment 257898

Do you have the part# for the 2018 headlights?

 

[cmatt]

will i lose the parking light option like the old pigtails ?

No. The park lamps will function like they came from the factory.


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[cmatt]

Matt is there a way around this? Is the brightness a dictated by a combo between the headlight housings and a control module?

Unfortunately there isn’t. There is no control module for the headlights. The LED strip has resistors hardwired into it that step down the voltage.


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[NappyBoy]

No. The park lamps will function like they came from the factory.


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Hey matt i sent you the payment and an email for the shipping address

 

[Tylus]

Hey matt i sent you the payment and an email for the shipping address

Can you give me the info on those fender flares?