Lippert Tread Lite 24-Inch Step Wiring & Parts Guide

Lippert's Tread Lite 24-inch powered RV steps are available as a single-step assembly (353542) or a double-step assembly (353543). Both are designed to extend and retract with the RV entry door and use a separate control module, wiring connections and step mechanism.

Use the factory mounting and wiring drawings below when identifying the original installation. If you are replacing only the control, Lippert lists 334850 as a replacement module for these Tread Lite power-step models.

Tread Lite step models and replacement controller

Manufacturer part	Model	What it includes	Shop or identify
353542	24-inch single electric step	Step assembly, switch and harness	View Tread Lite single step
353543	24-inch double electric step	Step assembly, switch and harness	View Tread Lite double step
353620	30-inch single electric step	Different tread-width assembly	Match the 30-inch mounting drawing
353621	30-inch double electric step	Different tread-width assembly	Match the 30-inch mounting drawing
334850	Tread Lite power-step controller	Replacement control module	View Tread Lite controller

Lippert lists all four step assemblies in its Tread Lite range and identifies 334850 as a controller replacement for 353542, 353543, 353620 and 353621. Always match the installed part label before ordering.

Tread Lite 24-inch and 30-inch mounting diagrams

The installation drawing shows separate 24-inch and 30-inch step-base dimensions and the slotted mounting holes. It also identifies the front edge of the mounting plate. Confirm the frame space and bolt locations on your RV; the tread width alone does not establish installation fit.

Lippert 353542 Tread Lite 24-inch single electric RV entry step product photograph — Lippert Tread Lite OEM installation manual, page 3, Figures 1 and 2. Open the full-size manufacturer document.

Lippert 353543 Tread Lite 24-inch double electric RV entry step — Lippert Tread Lite OEM installation manual, page 3, Figures 1 and 2. Open the full-size manufacturer document.

Tread Lite controller and wiring diagram

Lippert's wiring drawing identifies the door proximity switch, hold/cycle switch, ignition input, porch-light input, ground, 12V supply, motor and brake connections. The ignition circuit is designed to retract an extended step when the entry door is closed.

Factory drawing 2: original document

The Lippert 334850 is the controller; 353542 and 353543 are complete step assemblies. Wiring details remain in the original PDF.

Open original manufacturer drawing

Lippert Tread Lite OEM installation manual, page 4, Figure 3. Open the full-size manufacturer document.

Door proximitySignals the step to extend when the entry door opens and retract when it closes.

Hold / cycleAllows the step to stay extended when parked, subject to the ignition and door safety circuit.

Porch lightControls the step-light input when wired to the vehicle's light switch.

Motor and brakeFactory wiring provides motor drive current and a separate 12V brake-release connection.

Tread Lite complete steps and controller photographs

Compare the single-step and double-step assemblies with your original equipment. The 334850 module is a service part, not a complete electric step or a motor replacement.

353542Lippert Tread Lite 24-inch single power stepView product

Second product photograph of Lippert 353542 Tread Lite single electric RV entry step

353542Lippert Tread Lite 24-inch single power stepView product

353543Lippert Tread Lite 24-inch double power stepView product

Lippert HappiJac 334850 replacement control module for Tread Lite electric steps

334850Lippert Tread Lite step controller 334850View product

Installation and service identification

Lippert's installation procedure calls for checking the step's position and squareness before tightening the mounting hardware. The manual identifies four mounting bolts with matching nuts, and a final tightening torque of 20 ft-lb for that installation. Follow the instructions for your actual mounting structure.

If a Tread Lite step is not operating, first confirm the step assembly number and existing controller part label. The factory wiring diagram can help identify which switches, connections and power inputs belong to the system; it does not establish that an unrelated controller is interchangeable.

Before working on powered steps: Follow Lippert's safety procedure, support the coach as required and disconnect power at the vehicle battery after extending the step. The linkage and treads can move unexpectedly.

More electric-step references

Manufacturer documents: Lippert Tread Lite OEM installation manual; 334850 controller specifications.

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Lippert Tread Lite 24-Inch Electric RV Step Wiring & Parts Guide