Description
Bulb Holder – Rear Light – For Citroën Berlingo And Peugeot Partner First Series. No Corrosion, Not Heat-Damaged, Fully Functional; Bulb Operation Not Guaranteed.
Overview
This used rear light bulb holder (socket) is designed for first-series Citroën Berlingo and Peugeot Partner models and is listed under part number 634679. It is a direct-fit replacement for worn, cracked or corroded lamp sockets in the tail lamp cluster. The part is supplied in good condition with no visible corrosion and no heat deformation, but the bulbs themselves are not guaranteed to be functional. Ideal for professional workshops and competent DIY mechanics who maintain or restore older PSA light assemblies.
Function And Application
The bulb holder secures the bulb in the rear light cluster and provides the electrical connection for tail, stop, and indicator bulbs depending on the socket design. A reliable socket ensures consistent contact, prevents flicker, and reduces the risk of intermittent lighting faults that can arise from loose connections or corrosion. This socket is commonly replaced when electrical faults, water ingress, or physical damage prevent the light from operating correctly.
Installation
- Park Vehicle On Level Ground And Remove Ignition Key. For Safety, Disconnect Negative Terminal Of The Battery Before Starting Work.
- Access The Rear Lamp Assembly From Inside The Boot Or By Removing The Tailgate Trim Depending On Model Configuration.
- Remove Fixing Screws Or Clips Holding The Lamp Unit, Withdraw The Lamp Assembly, And Unplug The Main Wiring Connector.
- Release The Old Bulb Holder By Pressing The Retaining Tabs Or Rotating The Holder Out Of The Lamp Housing (Method Depends On Specific Lamp Design).
- Fit The Replacement Holder Ensuring It Clicks Or Locks Into The Housing Securely. Reinsert Bulbs And Reconnect The Wiring Connector.
- Before Reassembling The Trim, Test All Light Functions (Tail, Brake, Indicator, Reverse Where Applicable) To Confirm Correct Operation.
- Use Dielectric Grease On Contacts If Required To Reduce Future Corrosion And Ensure A Long-Lasting Electrical Connection.
Technical Information
- Manufacturer: Stellantis / Citroën / Peugeot
- Model: Citroën Berlingo First Series; Peugeot Partner First Series
- Product Codes: 634679
- Additional Numbers: N/A
Condition And Seller Notes
Item Condition: Used. The housing shows no signs of corrosion and no heat damage. The socket is reported as fully functional by the supplier, but the actual bulbs are not guaranteed to work. Inspect bulb contacts and replace bulbs as necessary when installing.
Most Common Failure Reasons
- Corrosion From Moisture Ingress: Water Seals Around The Lamp Can Degrade Over Time Allowing Corrosion To Break Electrical Contact.
- Heat Damage: Prolonged Overheating From High-Wattage Bulbs Or Poor Ventilation Can Warp Or Melt Plastic Retaining Tabs.
- Mechanical Wear: Repeated Bulb Changes Or Impact From Minor Collisions Can Crack The Socket Or Break Retaining Clips.
- Electrical Faults: Loose Contacts Or Short Circuits Can Cause Arcing, Leading To Pitted Contacts And Intermittent Lighting.
Recommended Practices
- When Replacing The Socket, Check And Replace Any Damaged Seals To Prevent Future Water Ingress.
- Use Correct Bulb Types And Wattages Specified For The Vehicle To Avoid Overheating The Holder.
- Clean Contact Surfaces Before Installation And Consider Applying A Small Amount Of Dielectric Grease To Protect Against Corrosion.
- Verify All Light Functions After Installation And Ensure The Lamp Assembly Is Properly Seated To Maintain Waterproofing.
Why Choose This Part
This replacement bulb holder offers a cost-effective way to restore reliable rear lighting on older Citroën Berlingo and Peugeot Partner first-series vehicles. It is suitable for workshops carrying out body repairs, trailer wiring fixes, or restorations where the original lamp socket has been damaged or corroded. The reference number 634679 makes it easy to locate the correct unit when searching parts catalogs or online listings.
