How to Install a Tonneau Cover on a Ram 1500 With Ramboxes
A Ram 1500 fitted with Ramboxes needs a cover designed for the truck’s side storage compartments. Standard Ram 1500 tonneau covers may interfere with the Rambox lids, sit too far inward, or prevent the storage boxes from opening. Confirm the model year, bed length and cover configuration before opening the packaging.
Most installations use clamp-on rails, so drilling is often unnecessary. The job is manageable at home with basic tools, although a second person makes it easier to position a heavy folding or retractable cover without scratching the paint. In Australia, plan around heat, dust and sudden rain, particularly if the ute is regularly used around Brisbane, Perth or regional work sites.
Check Compatibility And Prepare
Read the cover’s fitment chart against the exact Ram 1500 version. Check whether the truck has a 5-foot-7-inch or 6-foot-4-inch tub, factory bed lighting, an electric tailgate and the original Rambox lids. A cover listed for a RamBox bed should leave the storage compartments usable and should include rails or brackets shaped for that body design.
Park on level ground and wash the upper bed rails. Fine sand or dried mud can stop clamps sitting squarely, while wax or oily residue can allow the rails to shift. Let the surfaces dry, then place a clean blanket over the tailgate and rear quarter panels while unpacking the cover.
A useful buying reference is this tonneau cover comparison, especially when deciding between a soft roll-up, hard folding, retractable or hinged design. The best choice depends on whether you need quick access, higher security, full-bed loading or frequent use of the Rambox compartments.
Gather Tools And Set Up
Most clamp-on systems need a socket set, ratchet, open-ended spanners, a tape measure, a trim tool and a Phillips screwdriver. Keep a torch, clean cloths and a small torque wrench nearby. Do not apply thread locker unless the manufacturer specifies it, because some brackets use captive nuts or coated threads that can be damaged by unsuitable compounds.
Lay out every rail, clamp, bracket, seal and fastener beside the instructions. Covers for Rambox models can have left- and right-hand parts that look almost identical. Sort them before lifting anything onto the truck. If the cover is powered or includes a light, disconnect the battery negative terminal before working near the tailgate wiring.
A Ram 1500 used for camping often carries recovery gear, tubs and cooking equipment in the bed. Storage planning matters because a bulky canister or folded cover may reduce usable cargo space. Similar practical packing ideas can be found among these camping equipment notes, although the cover’s own instructions remain the authority for installation.
Fit The Side Rails
Place each side rail on the top inner edge of the bed, following the supplied diagram. On Rambox models, the rail must clear the opening and hinge movement of the side storage lid. Keep the rail parallel with the bed side rather than pushing it tightly against the lid. Open and close both Ramboxes before fully tightening anything.
Install the front and rear clamps loosely first. Some designs use separate front, centre and rear clamps; others use brackets that attach to existing bed features. The clamp jaws should grip solid metal, not plastic trim or a thin edge. If a clamp seems too short, stop and recheck the orientation instead of forcing it.
Measure from the front bed wall to each rail at several points. Matching measurements on both sides help prevent the cover from tracking diagonally. A small difference at the front can become a large alignment problem at the tailgate, causing the latches to bind or the weather seal to lift.
Mount And Adjust The Cover
With the rails secure but not fully torqued, place the cover on the front mounting points. A second person should support the opposite end, particularly with aluminium slat retractable covers. Centre the cover from side to side, then unfold or extend it towards the tailgate without forcing the panels over the rail edges.
Check that the front seal contacts the bed wall evenly and that the rear latch lines up with both rails. If the cover is a folding type, fold it back and confirm that it does not strike the cab, rear window or Rambox lids. If it is a roll-up model, inspect the straps and buckles so they do not rub against painted surfaces.
Adjust the rail position in small increments. The ideal fit allows the cover to move smoothly while retaining light compression on the seals. Tighten the clamps progressively, alternating from side to side. Follow the supplied torque specification; over-tightening can distort a rail, crush a bed flange or make the Rambox lid difficult to operate.
Test Sealing And Road Safety
Run a hose gently over the front corners, side seals and tailgate. Do not use a pressure washer at close range because it can force water past the seals and create a misleading test. Open the bed afterwards and look for damp patches, then add only the approved foam or bulb seal where the instructions identify a gap.
Australian conditions make this inspection worthwhile. UV exposure in Adelaide or Darwin can harden vinyl, while dust from unsealed roads can collect in the rail channels. A cover that appears dry in light rain may still allow fine dust through if the rails are twisted or the tailgate seal is poorly positioned.
Before driving, confirm that the cover does not obscure the number plate, tail lamps, brake lamps or rear reflectors. Load and accessory rules vary between Australian states and territories, so check the relevant transport authority if the cover, cargo or a fitted rack changes rear visibility. Make sure every load remains restrained under the applicable local requirements.
| Cover type | Rambox access | Security | Best suited to |
|---|---|---|---|
| Soft roll-up | Usually excellent when correctly fitted | Basic | Frequent access and lower cost |
| Hard folding | Good, with folded sections taking space | Moderate to high | Mixed daily use and occasional bulky loads |
| Retractable | Good, but the canister uses bed space | High on premium models | Clean appearance and controlled opening |
| One-piece hinged | Limited while open | High | Weather protection and covered cargo |
Maintain The Fit Over Time
After the first drive, recheck every clamp and latch. New seals can settle, and vibration from corrugated roads may reveal a loose rail. Inspect the cover after the first week, then whenever the truck has carried a heavy load or travelled on rough surfaces. Never allow cargo to press upward against the cover panels.
Clean vinyl with mild soap and water, and use only a manufacturer-approved protectant. Wipe aluminium rails and drain channels clear of leaves, grit and insects. Keep the Rambox lid seals clean so the storage boxes continue to close evenly. Avoid silicone sprays near latches unless specified, as excess lubricant can attract abrasive dust.
A correctly installed cover should open without rubbing, leave both Ramboxes functional and remain stable at highway speed. Complete one final check by opening each storage compartment, extending the cover fully, closing the tailgate and confirming that all latches engage; then take a short local drive and recheck the clamps before the next long trip.