Replaces the electric steps, motor, and control unit for your Kwikee 25 series RV steps. Motor and control unit automatically extend and retract the steps when you open and close your door. Wiring ... , control unit, and switch kit is available under part number LC3658373 . The included 4-way plug fits into the existing wiring harness on your RV. Most vehicles should having this wiring already set up. In