Pictures of my 6.2L AT4 on stock suspension with 36inch tires, Borla Exhaust and Amber DRLs

smit303 · October 28, 2024

Check out venomtrucks.com. They are selling a harness for about $120 that will do the amber DRLs. Who's going to be the guinee pig? They are on facebook also.

Edited October 28, 2024 by smit303

AttiDaddy · October 28, 2024

42 minutes ago, smit303 said:

Check out venomtrucks.com. They are selling a harness for about $120 that will do the amber DRLs. Who's going to be the guinee pig? They are on facebook also.

I had seen that, but also read that it automatically goes back to white when the headlights or parking lights come on. Personally looking to keep it amber all the time and possibly have the control when I want it to go back to white like GM90 had posted.

Steve172 · December 31, 2024

On 10/7/2024 at 12:21 AM, GM90 said:

I won’t be making these myself, but I’ll share the instructions here. The most challenging part was designing the PCB, which I’ve already completed through a lot of trial and error. I’ll upload the PCB files so you guys can get them printed at JLCPCB.com—this is the service I used. Once you have the control board, all you need to do is create four pigtail harnesses (two for each side) and place the board in a waterproof/weatherproof enclosure. I’ll also look up the part numbers for the connectors and pins.

The installation is simple: unplug the harness from the headlight housing, connect it to one side of the PCB, and then plug the pigtail from the other side of the PCB into the headlight.

If you’d like the option to switch between amber and white DRLs, you can run two wires from the PCB into the cab and install a two-position switch.

Alternatively, if you don’t want to run wires into the cab, you can place a small jumper on the PCB itself, allowing you to have either white or amber LEDs. (Can't switch colors on the go)

I’ll try to make time for a more detailed write-up with pictures. I’ll need to sift through some old emails since it’s been a while.

The lights have been working great and look fantastic. I haven’t had any issues with them. As a courtesy to other drivers, I switch to the white DRLs at night because they automatically dim with the light sensor, while the amber ones are super bright.

Did you by chance have an opportunity to upload those PCB files? Those amber DRL look really clean, hoping to try this out on my truck! Been trying to find out if this was possible and glad to see it’s been done already. Thanks in advance.

GM90 · August 31, 2025

Been out of the country for a couple years but finally back. While browsing Reddit I saw that someone is actually making those amber DRLs now, looks like it is called Venom.

I remember getting a bunch of messages asking how I made mine, and I promised a few people I would explain, but I never got the chance to reply. Sorry about that.

I'd loved to have manufactured this and made a tiny bit of money from it but i didn't have the resources.

Anyways, now you do not need to DIY because there is a proper harness available.

Cheers.

https://venomtrucks.com/product/gmc-sierra-amber-running-lights/

Edited August 31, 2025 by GM90