Headlight Harness Wiring-Pin Diagram

[Silverado22LT]

Does anyone know where I could find the headlight harness wiring-pin diagram for 22-Silverado LT like the one attached; the one shown has 8 pins and mine has 12? I need to posi-tap into L/R turn signal & L-park for AVS-Lightshield pro bug reflector. Any suggestions?

[scotman623]

My suggestion would be to use a micro fuse tap and run off the parking light fuse in the box..

[T.Edwards99]

How did you end up tapping into the headlights? My harness is like yours 

[SgS]

Hello I would like to know how you solved it. I have 21 silverado with 8pin and need to convert it to 22 silverado headlights with 12 pin like the one you have in above picture

Edited February 13, 2023 by SgS

[SgS]

Hello I would like to know how you solved it. I have 21 silverado with 8pin and need to convert it to 22 silverado headlights with 12 pin like the one you have in above picture

[kperro]

I just bought the AVS Aeroskin Lightshield PRO and could not for the life of me figure out what wires to tap into, so I wanted to share my results with anyone else looking for information on this. 

 

2023 GMC Sierra 1500 - 12 Pin Headlamp Harness

 

[Ground] Black Wire on Black Wire (Slot 1 Drivers Side)

[Parking Lights] Brown Wire on Blue/White Wire (Slot 5 Drivers Side)

[Left Turn Signal] Yellow Wire on Blue/White Wire (Slot 7 Drivers Side)

[Right Turn Signal] Green Wire on Blue/White Wire (Slot 7 Passenger Side) 

 

I would rely more on the slot number vs color, but you can test each slot with a voltmeter to be sure. 

 

This is if you have the pin unplugged and you're looking at the flat end with the red tab on top. Slot 1 would be the top right, 6 is top left, 7 is bottom right and 12 is bottom left. Hopefully this helps someone else out since the instructions don't.

[Nightwalker712]

Does anyone know what connectors these are, I want to make a plug in play harness for mine without using wire taps on the main harness.

[Krathos]

For anyone struggling with the Illuminated GMC grill badge having an 8 pin connector while the head light has a 12 pin connector below are the two wires I successfully tapped into to make it work. 
 

2025 GMC Sierra 2500HD Denali Ultimate 

12pin driver side head light harness

Pin #1 Black = GND

Pin #6 White/Yellow Stripe = Running Lights

 

Tip: Turn the wheel to the right and remove 5 of the wheel tub screws. And fold tub enough to get at harness. 

[Daniel27]

Can someone help me with the wiring hardness connector on a 2015 GMC sierra 1500 with the led headlights on passenger side please

connector broke and I need the wiring pattern 

[davester]

On 4/26/2025 at 5:54 PM, Daniel27 said:

Can someone help me with the wiring hardness connector on a 2015 GMC sierra 1500 with the led headlights on passenger side please

connector broke and I need the wiring pattern 

you posted in the wrong section, this is for completely different trucks than yours is.