Rear Left Lamp Socket for Citroën C4 Grand Picasso 6350AC

Description

Socket with bulbs for the rear left lamp for Citroën C4 Grand Picasso vehicles. Comes with a piece of wiring.

This rear left lamp socket, catalog number 6350AC, is a practical replacement part aimed at professional mechanics and competent DIY enthusiasts. It supplies the bulb holders and a short wiring pigtail to restore reliable electrical contact and secure bulb mounting in the tail light assembly. The part is commonly searched by its product code (6350AC), making it easy to find when repairing lighting faults on Citroën C4 Grand Picasso models.

Technical Information

• Manufacturer: Stellantis / Citroën / Peugeot
• Model: Citroën C4 Grand Picasso (also referenced for C4 Picasso in some listings)
• Product Codes: 6350AC
• Other Numbers: Not specified

Function

The socket assembly holds the rear lamp bulbs and provides the electrical connection between the vehicle wiring loom and the bulbs. It ensures correct bulb seating, stable contact under vibration, and safe current transfer for tail, brake and indicator lamp functions. This particular supply includes the bulbs installed in the socket and a short length of wiring for direct connection.

Fitment

Designed for the rear left tail light on Citroën C4 Grand Picasso vehicles. Confirm fitment by matching the product code 6350AC and the physical shape of the lamp socket with the original part during installation.

Replacement Procedure

1. Park the vehicle on a level surface and switch off the ignition.
2. Disconnect the negative battery terminal before starting work to avoid short circuits.
3. Remove the tail light assembly access screws or trim (refer to vehicle service manual for exact fastener locations).
4. Withdraw the lamp assembly enough to access the socket from the rear.
5. Unplug the original socket from the vehicle wiring harness and remove it from the lamp housing.
6. Fit the new socket (with bulbs) into the lamp housing, secure it in position and reconnect the wiring pigtail to the vehicle harness.
7. Reinstall the lamp assembly, tighten fasteners, reconnect the battery and test all lamp functions (tail, brake, indicator, reverse if applicable).

Installation Recommendations

• Always disconnect the battery before beginning the replacement to prevent electrical damage.
• Inspect the tail light housing and seals for moisture or damage; replace seal or apply suitable sealant if needed to prevent ingress.
• Check connector pins for corrosion and clean or replace connectors if contacts are degraded.
• Use gloves when handling bulbs to avoid skin oils that shorten lamp life.
• After installation, verify all light functions and check for secure mechanical fitment to avoid vibration-related failures.

Why This Part Fails

Common failure causes include corrosion of contacts due to moisture ingress, heat-related degradation of plastic components, brittle or cracked sockets from age, and mechanical damage during lamp removal or impact. Faulty or intermittent connections often present as flickering, non-illuminating, or intermittent tail/brake/indicator lights. Replacing the socket and ensuring proper sealing typically resolves these issues.