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To replace an RV clearance light, disconnect its power source, remove the old fixture, connect a compatible replacement, and reseal the mounting area against moisture. The key is to make secure wiring connections and protect the wall penetrations from water. This guide covers screw-mounted fixtures with two-wire connections; follow the replacement light’s instructions if its installation differs.
Gather these tools and materials before starting:
Choose a replacement approved for the original light’s function, with the correct light color, voltage, mounting arrangement, and wiring configuration. Confirm compatibility before removing the existing fixture.
If the light is above comfortable reach, use a stable ladder on firm, level ground.
Disconnect the RV’s 7-way cord from the tow vehicle before working on the clearance-light wiring.
If your RV has another power source or accessory that can energize the clearance lights, disconnect it according to the manufacturer’s instructions. Verify that no voltage is present at the light before cutting or handling exposed wires.
Carefully cut through the sealant around the light with a razor knife. Keep the blade shallow to avoid damaging the sidewall or wiring.
Remove the lens cover according to the fixture’s design, then remove the mounting screws. Gently pull the light away from the wall and bring the wire connections outside the opening.
Before disconnecting anything, photograph or label the connections so you can identify the power and ground wires. Disconnect the old light, cutting the wires only where necessary and leaving enough wire for the replacement connections.
Keep the RV wires accessible so they do not slip back into the wall.
Remove the old putty tape and sealant without scratching the exterior surface. Clean away adhesive residue with a compatible adhesive remover, then prepare the area with isopropyl alcohol if approved for that surface.
Allow the area to dry completely before installing the replacement.
Inspect the mounting holes, exposed wiring, and surrounding wall. If you find damaged insulation, corrosion, loose mounting material, or signs of water intrusion, address those issues before covering the opening.
For the screw-mounted fixture described here, place putty tape on the back of the light at each mounting screw hole. Follow the replacement manufacturer’s instructions for any additional gasket or sealing requirements.
Strip the wire insulation to the length required by the connectors. Keystone’s demonstrated installation uses approximately ½ inch, but the connector manufacturer’s specified strip length takes priority.
Avoid nicking the wire strands while stripping the insulation.
Connect the RV’s positive supply wire to the replacement light’s positive lead, then connect the ground/negative return wires.
These are DC power and ground connections—not a household AC hot-and-neutral circuit. Identify each wire using the fixture instructions and RV wiring information rather than assuming colors match.
For the wire-nut method described in Keystone’s tutorial:
If the replacement light specifies a different connector or connection method, follow those instructions. Electrical tape does not replace a secure connector.
Carefully tuck the connected wires into the wall opening without pinching them. Position the light against the wall and reinstall the mounting screws.
Tighten the screws evenly until the fixture is secure. Avoid overtightening, which can crack the housing or damage the mounting holes.
Reinstall the lens cover, if removable. Apply compatible exterior sealant at the fixture-to-sidewall joint as directed by the light manufacturer. Seal the mounting penetrations while keeping any designed drain openings clear.
Follow the sealant manufacturer’s surface-preparation and curing instructions.
Once the fixture is installed and the connections are enclosed, reconnect the 7-way cord and activate the tow vehicle’s running lights.
Confirm that the replacement illuminates steadily, then check the remaining exterior lights. If the new light does not work, disconnect power again before inspecting the connections.
Persistent problems may involve the supply circuit, ground, fuse, or tow vehicle connection rather than the replacement fixture.
Include clearance lights in your pre-trip walkaround. Look for lights that do not illuminate, cracked or loose lenses, and gaps in the sealant around the fixtures.
Working lights help other drivers recognize your RV’s size and position. A securely mounted, properly sealed fixture also helps protect the installation area from moisture.
Check your RV’s clearance lights before your next trip and repair any damaged or nonworking fixtures.
Disclaimer: The information contained in this article is deemed to be true and accurate at the time of publication. However, due to the evolving nature of our products and services, there may be changes or updates that occur after this article was published. We encourage users to verify the contents and consult with their dealer or Keystone RV for the most current information. If you have any questions or require further clarification, please do not hesitate to contact your dealer or reach out to Keystone RV directly.