The video below breaks the truck tonneau cover installation process into simple, easy-to-follow steps. Mounting Bracket (Factory or Drill Hole) Installation Series Jump to a specific video in the series Alternate Install Video 5 – Drilling and Mounting L Brackets Alternate Install Video 6 – Installing the Rails Alternate Install Video 8 – Initial Ramp Adjustment Alternate Install Video 9 – Panel and Frame Adjustment Optional Tailgate Seal Installation