This installation reference covers 2018-2021 Toyota Tundra Flow Series DRL Boards. Match the product, vehicle configuration and controller part number before starting.
Part # G12
Toyota Tundra Flow DRL Boards (2018-2021)
Step 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.
Flow Series Bluetooth Controller w/ DRL SmartSwitch - Install Guide
Step 2: Remove your bumper to access headlights.
14-22-Toyota-Tundra Bumper and Headlight Removal Guide PDF
Step 3: Open your headlights. (*Confirm the opening and resealing method for your exact housing before following the video below)
Step 4: Install your LED Product into your headlights.
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.
Flow Series Bluetooth Controller w/ DRL SmartSwitch - Install Guide
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 Toyota Tundra Flow Series/Color Chasing DRL Boards (2018-2021) 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.
Controller and wiring guide · Ask installation support · Browse lighting guides
