- 1). Rub the top sill on the truck bed with a cloth saturated in alcohol to remove any wax or dirt to prep the surface for the insulating tape.
- 2). Install a line of insulating tape to the top front and both sides of the truck bed.
- 3). Lift the cap with a helper and align the cap before allowing it to touch the insulating tape. Lower the cap down to the top of the truck bed. Check both sides to make sure it is centered perfectly.
- 4). Install the c-clamps with three on either side. Place one in the front, one in the middle and the last near the rear window. Tighten them securely with a wrench.
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