Product Link: https://rgbhalokits.com/products/2020-2021-gmc-sierra-2500-3500-hd-drl-kit?_pos=4&_sid=82576766d&_ss=r
Step 1: Remove bumper
Step 2: Open the headlights
Step 3: Remove factory DRL boards from headlights and swap Multicolor Boards in their place
Step 4: Reseal headlights
Step 5: Wire your Multicolor DRLs according to the Wiring Guide