Genuine Lippert replacement wiring harness for the In-Wall (Schwintek) slide-out system. Connects the slide-out controller to the motor with a 6-pin male-to-female connection over a 20 ft protected wiring casing. Cross-referenced by Forest River, Grand Design, Heartland, Jayco, Keystone, Thor, Winnebago, and Gulf Stream.
The Lippert 229755 is the genuine OEM replacement wiring harness for In-Wall (Schwintek) slide-out systems -- the most widely installed slide-out mechanism in the RV industry. When your slide hesitates, loses communication between the controller and motor, or shows wiring damage from pinching, chafing, or heat, this harness is the direct replacement that restores proper operation without programming or modification.
Unlike generic wire splices or field repairs, this harness uses Lippert-spec connectors and conductor gauges matched to the demands of the In-Wall motor drive system. The protected outer casing guards against abrasion and moisture in the tight wall cavity where this harness runs.
6-pin male-to-female ends matched to the In-Wall (Schwintek) controller and motor connector footprint. No adapters or pin modifications needed.
Outer casing shields conductors from abrasion, pinching, and moisture inside the slide-out wall cavity -- a common failure point on high-mileage rigs.
20 ft total length accommodates most mid- to large-size RV slide-out bays. Also available in 10, 15, 25, 30, and 35 ft lengths for different slide configurations.
Cross-referenced by Forest River, Grand Design, Heartland, Jayco, Keystone, Thor, Winnebago, and Gulf Stream as a qualified replacement part.
The In-Wall slide-out system -- commonly called Schwintek after its original developer -- is a rack-and-pinion style mechanism built directly into the wall of the slide room. It uses two synchronized motors (one per rail) driven by a single controller, which communicates with both motors over the wiring harness. This design allows very thin slide-out walls and large room extensions without the bulk of traditional under-floor mechanisms.
Because the harness runs inside a finished wall cavity and flexes slightly each time the slide operates, wiring wear and connector fatigue are leading causes of slide-out errors. A harness replacement is often the first diagnostic step when the controller throws a fault or one motor stops responding.
Part number 229755 is a genuine Lippert Components assembly -- not an aftermarket approximation. Using the correct OEM harness preserves the controller's ability to detect motor load and synchronization errors accurately, which protects the motors and the slide-out structure itself.
Measure the routing path of your existing harness from the controller location to the motor connection -- not just the straight-line distance. Add slack for routing around corners and securing with clips. The 20 ft harness (229755) is the most common fit for slides in the 12-16 ft room range. If your existing harness is 15 ft or shorter, the 20 ft replacement gives useful service loop slack. Other lengths: 10 ft (229751), 15 ft (229753), 25 ft (229757), 30 ft (229759), 35 ft (229761) -- verify against your slide bay measurement before ordering.
Harness replacement is a DIY-accessible repair for owners comfortable working inside RV wall cavities. The basic procedure involves disconnecting the old harness at both the controller and motor connectors, routing the new harness through the same path (retaining any factory clips and conduit), and reconnecting both ends. No crimping or soldering is required -- both ends use keyed plug-in connectors.
After installing a new harness, inspect the slide-out wall cavity for any metal burrs, loose fastener tips, or heat sources that may have caused the original failure. A new harness installed in a damaged cavity will fail early for the same reason. Use split loom or conduit to protect the harness at any contact point with the wall frame.