Hear me out, ‘25 to ‘23 headlight conversion

customdoohicky · February 20

I have a ‘25 custom with the terrible halogen lights, between fighting to see against all the new cars coming my way on hilly back roads with their LEDs, and the terrible light output my truck has I need to upgrade.

The OEM LED headlight assembly’s from the 20-23 models are a direct replacement psychically, but from my understanding the harness plug is different. Has anyone done this, or know of a reverse harness to make it work? I cannot seem to find anything. The price point for a set is much more appealing than the 1,500 morimotos.

I am close to giving up and getting lasfit bulbs to help myself, but I know its the wrong application and technically illegal in my state, even when you aim them down. A reflector housing scatters light, it does not direct it properly, but I am willing to listen to opinions to sway me the other way, if there is something I don’t know about them.

Thanks for reading!

Edited February 20 by customdoohicky

Another JR · February 20

I don’t have any solutions to offer, but I commend you for caring about having legal headlights.

newdude · February 20

1 hour ago, customdoohicky said:

I have a ‘25 custom with the terrible halogen lights, between fighting to see against all the new cars coming my way on hilly back roads with their LEDs, and the terrible light output my truck has I need to upgrade.

The OEM LED headlight assembly’s from the 20-23 models are a direct replacement psychically, but from my understanding the harness plug is different. Has anyone done this, or know of a reverse harness to make it work? I cannot seem to find anything. The price point for a set is much more appealing than the 1,500 morimotos.

I am close to giving up and getting lasfit bulbs to help myself, but I know its the wrong application and technically illegal in my state, even when you aim them down. A reflector housing scatters light, it does not direct it properly, but I am willing to listen to opinions to sway me the other way, if there is something I don’t know about them.

Thanks for reading!

I would get in touch with Gen5diy as they make conversion harnesses to do this.

You will either need the 2020-2023 harness - 20-23 Silverado HD LED Headlight Harness – Gen5DIY

Or the 24-26 harness - 2024-2026 Silverado HD Headlight Harness – Gen5DIY

The note they have on the 24-26 harness says its not for installing the 2020-2023 LEDs, so that leads me to believe you need the 2020-2023 harness they call for instead of the 24-26 harness which would be for adding the 24-26 factory LEDs. But that would require swapping your grille as well to make that happen.

As for just bulb swapping, I'd look into VLEDs. Their V35 Monochrome is designed for reflector housings - MONOCHROME SERIES H11 H8 H9

Edited February 20 by newdude

OS RR · February 20

I still don't understand why everyone complains about the halogen headlights. Mine are fine. On everything I've ever owned.

I still get blinded by LEDs though, even with as tall as these trucks are.

Pryme · February 22

On 2/20/2026 at 5:29 PM, OS RR said:

I still don't understand why everyone complains about the halogen headlights. Mine are fine. On everything I've ever owned.

I still get blinded by LEDs though, even with as tall as these trucks are.

Yeah mine are fine too except low beams during rain out in the country. A little lacking in that environment.

KARNUT · February 22

I’m perplexed on how outrageously bright modern headlights are. Most any vehicle going over an incline seems to get extra bright. I have no problem driving between the lines with normal headlights. When alone we have bright lights. For many years of my driving life those round headlights of the past were just fine. Maybe people are trying to drive too fast on two lanes at night. One of the many so called improvements I have no use for.

silveradosid · February 22

add auto hjghbeams and it is worse, i get blinded at least 4 to 5 time in my half hour drive home. i did long haul trucking for 45 years and all accident free with the lights we had. the cut off line of todays headlights are super bright and short, drivers just look in the light path and turn on the highbeams all the time. it is dangerous for sure

rjgvt · February 23

The cheapest GMC Pro model has LED headlights. I get it that some like Chevrolet trucks over GMC but this is not the first thread I’ve seen about wanting to replace the halogen headlights.