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This installation reference covers 2016-2018 GMC Sierra Multicolor DRL Boards. Match the product, vehicle configuration and controller part number before starting.
Part # E20, E21
GMC Sierra 1500 Multicolor DRL Boards (2016-2018)
Install GuideStep 1: Test your Product. This helps you check operation and confirm the wiring before permanent installation. See the wiring guide that comes with your product or visit our wiring guide.
Step 2: Remove your bumper to access headlights.
Step 3: Open your headlights. (*Confirm the opening and resealing method for your exact housing before following the video below)
Step 4: Install and Wire Your LED Product into Your Headlights
Follow our General DRL Installation Guide for instructions on properly installing your LED product.
For wiring instructions, visit our Help Center and search for the part number of your controller to find the corresponding wiring guide.
We are currently working on a product-specific video installation guide. In the meantime, if you have any questions or need assistance with installation or wiring, please don't hesitate to contact our support team. We're here to help!
Step 5: Reseal your headlights (see video above) or click here for full guide.
Step 6: If you haven't already, wire your LED Product onto your car using the included wiring guide
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The third-party videos in this article belong to their creators and are used by RGB Halo Kits for instructional purposes. We don't own these videos, and their accuracy isn't guaranteed. If you have concerns about the content, please don't hesitate to get in touch with us. Users agree to these terms by using the videos.
Additional installation videos
These earlier demonstrations may show a different controller revision. Use the current kit-specific wiring instructions above for your supplied hardware.
Source and installation help
Checked against 2016-2018 GMC Sierra Multicolor DRL Boards Install Guide in the RGB Halo Kits Help Center on October 22, 2026. Follow the instructions supplied with your exact kit if hardware versions differ.
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