Genuine OEM-spec 6-pin controller-to-motor replacement harness built for Lippert In-Wall (Schwintek) slide-out systems. If your slide-out is moving unevenly, stopping mid-travel, or throwing a wiring fault, a damaged or corroded harness is often the cause. The 229756 restores the critical communication link between the slide-out controller and the drive motors with a ready-to-install, 30 ft protected harness.
Lippert's In-Wall slide-out mechanism -- commonly called the Schwintek system -- uses a dedicated 6-pin wiring harness to carry both power and control signals between the slide-out controller and the two rack-and-pinion drive motors mounted inside the wall of the slide room. Because this harness routes through the slide mechanism and flexes every time the room extends or retracts, the conductors and connectors are subject to wear, pinching, corrosion, and rodent damage over time.
The Lippert 229756 is the genuine replacement harness for this system. At 30 ft, it covers the wiring run required for full-size slide rooms in fifth wheels, travel trailers, and motorhomes where shorter lengths fall short. The male-to-female connector orientation matches the factory plug-and-play connection points on the controller harness and motor leads -- no splicing required in most installations.
Matches the factory In-Wall controller-to-motor wiring spec. Carries power and signal on a single harness run.
Sufficient for large slide rooms in fifth wheels and motorhomes where shorter harnesses cannot reach both motor positions.
Outer casing shields conductors from chafing, pinching, and moisture exposure along the slide mechanism travel path.
Plug-and-play orientation matches OEM controller and motor connectors for a direct, no-splice replacement in most rigs.
This harness is used in two scenarios: direct replacement of a failed or damaged harness, and extension of the existing harness run when a controller or motor is relocated during a repair. Common symptoms of a failing In-Wall harness include:
Part number 229756 is an OEM Lippert component -- not an aftermarket approximation. It is the exact harness Lippert supplies to RV manufacturers and service centers for In-Wall slide-out wiring replacement. Using the correct Lippert harness ensures connector compatibility and protects the 1-year Lippert warranty on the repair.
Lippert offers this same 6-pin In-Wall harness in several lengths to match the physical wiring run in your specific rig. If 30 ft is longer than you need, shorter options are available. Measure the distance from your slide-out controller location to the farthest motor before ordering, and add slack for routing around corners and through wall passages.
Lippert 229756 is cross-referenced by service departments at Forest River, Grand Design, Heartland, Jayco, Keystone, Thor Industries, Winnebago, and Gulf Stream -- all of which use the Lippert In-Wall (Schwintek) slide-out system as OEM equipment. If your rig came from any of these manufacturers and has an In-Wall slide, this is the correct replacement harness at the 30 ft length.
Replacing the In-Wall slide-out harness is a hands-on job that requires removing access panels to expose the harness routing path. Before beginning, retract the slide room fully and disconnect shore power or the battery disconnect. The harness connects at the slide-out controller (typically mounted inside a cabinet or under a bed platform near the slide) and at each of the two In-Wall drive motors at the top corners of the slide room.
Inspect the harness connector ends and jacket annually, especially at points where the harness bends around slide frame members. Early detection of cracking or connector corrosion prevents a slide-out failure in the field. Dielectric grease applied to the 6-pin connector faces during reinstallation helps resist moisture intrusion.
If the harness alone does not resolve your slide-out issue, consider inspecting the In-Wall slide-out controller, the individual drive motors, and the rack-and-pinion gear tracks -- all available as separate Lippert service parts. A complete system check is faster than replacing components one at a time.