Description
Harness with socket for the rear upper light for Citroën C5 I and II Estate. Functionality of the bulb itself is not guaranteed.
This replacement tail light harness with socket is designed for the rear upper lamp on Citroën C5 estate models (C5 I and C5 II). Ideal for professional workshops and DIY mechanics, the part is often searched by part number 6534KA and helps restore reliable electrical connection to the rear upper lamp cluster when the original wiring or socket is damaged.
Key Features
- Direct-fit wiring harness with bulb socket for the rear upper light on Citroën C5 Estate (Kombi) models.
- Commonly referenced by part code 6534KA (also seen as 6534.KA).
- Designed to replace corroded or mechanically damaged sockets and short wiring pigtails.
- Suits both professional replacement and competent DIY installation.
Function And Typical Application
The harness provides the electrical connection between the vehicle wiring loom and the rear upper bulb/socket assembly. It secures the bulb in the lamp cluster and supplies power for brake, tail, or indicator functions depending on the lamp configuration. This delivery includes the socket only; the bulb’s condition is not guaranteed and should be checked or replaced as needed.
Installation
- Park the vehicle on a level surface, switch off ignition and remove the key.
- Access the rear upper lamp cluster via the tailgate or interior trim panel. Remove any clips or screws holding the lamp unit according to the vehicle’s procedure.
- Disconnect the old harness/socket from the lamp and the vehicle harness. Inspect connector pins for corrosion or damage.
- Connect the replacement harness to the vehicle loom and to the lamp socket. Ensure connectors are fully seated and locked.
- Fit the lamp back into the body, secure fasteners and test all lamp functions (tail, brake, indicator) before reassembly.
Installation Recommendation
- Always disconnect the battery before working on lighting circuits to avoid short circuits and accidental damage.
- Clean connector pins and apply a thin film of dielectric grease to prevent future corrosion and improve contact.
- Replace any brittle clips or seals in the lamp housing to restore watertighting and prevent moisture ingress.
- Verify lamp operation after installation and check for correct bulb type and seating.
Most Common Cause Of Failure
- Corrosion From Moisture Ingress: Water or condensation inside the lamp housing causes oxidation of connector pins and loss of contact.
- Mechanical Damage: Broken or melted sockets from overheating bulbs, impact damage, or stressed wiring due to poor routing.
- Age And Wear: Plastic sockets and locking tabs become brittle over time and fail under vibration.
- Incorrect Bulb Fitment: Using the wrong bulb type or an overpowered lamp can overheat and deform the socket.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C5 I Estate, Citroën C5 II Estate
- Product Codes: 6534KA
- Other Numbers: 6534.KA, 6534KA NFP
Search Tip: Customers commonly find this item by entering the part number 6534KA. Before installation, inspect the lamp housing for water damage and confirm the socket pin configuration matches the lamp on the vehicle.
