Description

This overhead roof lamp is a direct-fit interior lighting unit designed for a range of Citroën, Peugeot and DS models. It replaces the factory cabin lamp assembly and restores interior illumination, map/reading lights and switch functions. The unit is ideal for professional workshops and DIY mechanics who need an OEM-compatible cabin light with original part references for fast identification.

Technical Information

• Manufacturer: Stellantis
• Model: Citroën C4 II, C4 Grand Picasso, DS4, Peugeot 508
• Product Codes: 96781446BJ, 96887768BJ
• Other Numbers: 6362AS

Compatibility And Fitment

Fits specific interior roof locations on the listed Citroën, Peugeot and DS models. Always match the part number against the original unit on the vehicle before ordering. This lamp assembly is commonly listed under the OE codes above and is typically interchangeable between the corresponding model years and trim levels that use the same interior lighting configuration.

How To Replace

Basic replacement steps for a workshop or competent DIY mechanic:

• Disconnect the negative battery terminal or follow vehicle-specific electrical isolation procedures to avoid short circuits.
• Use a suitable trim tool or small flat screwdriver to gently pry off the lens cover, taking care not to damage clips or the headliner.
• Remove any retaining screws and unclip the lamp housing from the roof. Support the unit to avoid dropping it onto upholstery.
• Unplug the electrical connector and remove the old unit. If replacing individual bulbs or LEDs, inspect the socket and connector for corrosion.
• Install the new lamp by reversing the removal steps: connect the electrical plug, secure the housing with screws/clips and snap the lens back into place.
• Reconnect the battery and verify functionality of all light modes and switches.

Installation Recommendations

Use plastic trim tools to avoid scratching interior panels. Inspect wiring and connector pins for corrosion or damage and clean contacts if necessary. When replacing bulbs, use the correct type (refer to vehicle manual) and avoid touching halogen bulbs with bare hands. If the lamp contains LEDs, ensure polarity and connector orientation are correct. If any wiring is damaged, repair with proper automotive-grade splicing and insulation.

Why The Part Most Often Fails

Common causes of failure include blown bulbs, degraded or broken switch mechanisms, corroded connectors from moisture ingress, cracked or brittle plastic lenses and broken mounting clips from repeated removals. In some cases, failures are caused by wiring faults or short circuits. LED-equipped modules can fail due to degraded drivers or thermal stress over time. Regular exposure to moisture (for vehicles used in humid climates or after water leaks) accelerates connector corrosion and shortens service life.

Notes For Professionals

This lamp is a frequently searched item by OEM part number—use the product codes above for quick identification. The unit is suitable for both routine interior repairs and full cabin lighting refurbishments. For best results, inspect adjacent interior trims and headliner mounting points when installing the new lamp.