How to install the side guide rail cover distribution box

Install the side guide rail cover by positioning the side rails, securing clamps, applying weather seals, and attaching the cover with hooks and safety straps.Step 1: Prepare the Truck BoxClean the bulkhead and top surfaces of the box with an alcohol pad; wash and dry if necessary to remove dirt or debris .Ensure the tall side of the weather seal faces the cab for proper sealing .Step 2: Install the Weather SealPeel the protective backing from the seal gradually.Align the seal along the front of the side rail and inside edge of the box, extending to the opposite corner.Firmly press the adhesive along the seal and trim the tall side if needed to ensure a proper fit .Step 3: Position and Secure Side RailsPlace the side rail against the inside lip of the box, ensuring it touches the bulge on the bulkhead for proper alignment .Use a side rail guide on top of the box to hold the rail level.Install the first clamp near the front of the box, ensuring clamp teeth engage the side rail grooves. Finger-tighten first, then use a 1/2” wrench to finish tightening .Install the second clamp approximately 1/3 from the front, the third clamp 2/3 from the front, and the rear clamp as close to the tailgate as possible. Adjust for trucks with electric tailgates by slightly raising the side rail to avoid interference .Torque all clamps to 20 ft-lbs or follow any special instructions provided .Repeat the process for the opposite side rail.Step 4: Install the CoverLift the folded cover above the side rails and place the leading edge on the front rails.Hold the rear edge about 1 inch above the side rails and slide the cover hooks underneath the front rail catches on each side .Lower the cover to engage latches in the retainment brackets.Attach safety straps to the brackets on each side, ensuring they are secured to both the cover and side rails .Unhook storage clips at the front and unfold the middle panel toward the tailgate, followed by the rear panel. Hooks on the middle panel will engage automatically with the side catches.Step 5: Final AdjustmentsCheck that the cover is centered and flush with the tailgate and cab end of the side rails .Make minor adjustments if necessary to ensure a tight, weather-resistant fit.Confirm all clamps, latches, and safety straps are properly secured before use.TipsFor trucks with spray-in bed liners, smooth the surface and apply an adhesion promoter for better seal adhesion .Ensure air and surface temperatures are above 60°F when applying adhesive strips for optimal bonding .Always handle heavy hard covers with assistance to avoid injury or damage . Following these steps will ensure a secure, weather-tight installation of your side guide rail cover on the distribution box.