Venoms Auto Fog Light Harness is designed to fit the 2021-2024 GMC Yukon.
From the factory, GM disables the fog lights when high beams are engaged. This harness overrides that limitation, restoring full fog light functionality for improved visibility in all driving conditions.
All compatible models and installation diagrams are provided in the full product description below.
• 2021–2024 GMC Yukon
$19.99
In stock and ready to ship!
Our Auto FogLights Harness will allow you to always have your fog lights on anytime the headlights activate, regardless of light settings you have selected from inside the cab. Our harness bypasses GM’s LCM tuning to automatically turn the fog lights on. This means you will never have to turn them on manually again. This will keep your fog lights on even if you activate your high beam headlights. Take your trucks lighting performance to the next level today!
From the factory, GM’s lighting control module decides when your fog lights are allowed to run — and it shuts them off the moment you activate your high beams. Venom’s auto foglights harness bypasses GM’s LCM tuning to automatically turn the fog lights on with your headlights and keep them on, even with high beams active. This means you will never have to turn them on manually again.
The harness attaches to your LCM connectors under the driver dash using the included T-taps. Use the wiring diagram below to see exactly where each connection goes, and follow along with our install video on YouTube for a step-by-step walkthrough.

2021, 2022, 2023, 2024 GMC Yukon — not sure if this fits your ride? Message us with your year and trim and we’ll confirm before you order.
2021-2024 Yukon Auto FogLights Harness
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All products are backed by Venom’s 1 year free replacement warranty and supported by the best customer support around!
All returns must be made within 30 days of purchase and in new and unused condition and will be subject to a 10% restocking fee. Any damaged or modified equipment will not be returnable and will be shipped back to you.




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Very simple and direct install and as an added bonus, they stay on when the high beams come on so you get to keep your auto high beam feature
Works flawlessly Thanks this is the wires to connect to for a 2021 gmc Yukon Denali
2023 GMC Yukon Denali, Auto Foglight Kit with Amber DRLs just awesome! No more hitting the fog light switch when the headlight comes on and amber DRL look great . Thanks Josh for all your help!
This harness keeps my foglights on all the time on my 2022 Yukon Denali. Absolutely love it and pairs awesome with my amber DRL mod! Thanks Josh, You guys rock!!!!