Product Overview

This rear left tailgate lamp is a direct-fit replacement for Citroën C4 Picasso models and is commonly referenced by part numbers 9653547777 and 6350CC. Designed for professional workshops and experienced DIY mechanics, the unit restores correct rear lighting and fitment on the tailgate, maintaining OEM appearance and mounting points.

Features And Benefits

• Direct Replacement: Designed to match original mounting points and connector layout for an accurate fit.
• OEM Reference Numbers Included: Easy to locate in catalogs and search engines using 9653547777 or 6350CC.
• Driver Focused: Left side unit intended for the driver side tailgate, ensuring correct beam orientation and symmetry.
• Durable Construction: Body and lens built to withstand road conditions; sealing quality is critical for long life.

Installation Recommendations

• Prepare The Vehicle: Park on a level surface and ensure the tailgate is supported. If possible, have a second person assist with handling the lamp assembly.
• Power Isolation: Before disconnecting electrical connectors, switch the ignition off and isolate the vehicle electrical system to avoid shorts.
• Access The Lamp: Open the tailgate, remove the interior trim or access panel, and locate the fasteners securing the lamp assembly.
• Remove The Old Unit: Unscrew retaining bolts, carefully release any plastic clips, and unplug the wiring connector. Check for hidden screws along the inner edge of the tailgate.
• Fit The New Unit: Position the replacement lamp, engage clips, tighten fasteners to a firm but not excessive torque, and reconnect the wiring harness.
• Seal And Test: Ensure the gasket and sealing surfaces are clean and undamaged. Reconnect power and test all lamp functions (tail, stop, indicator, reverse if applicable) before refitting trim panels.
• Final Check: Confirm alignment and that no wiring is pinched when closing the tailgate.

Most Common Cause Of Failure

• Water Ingress: Damaged seals or cracked lens allow moisture to enter, causing corrosion or electrical faults.
• Impact Damage: Rear impacts or loading damage to the tailgate often fracture the lens or break mounting tabs.
• Connector Corrosion: Road salt and moisture can corrode contacts in the wiring plug, causing intermittent or complete failure.
• Bulb Or LED Failure: Individual light sources can fail with age; full assemblies are often replaced to restore correct optics and sealing.

Technical Information

• Manufacturer: Stellantis (Citroën)
• Model: Citroën C4 Picasso
• Product Codes: 9653547777, 6350CC
• Other Numbers: 9653547777 | 6350CC

Notes For Buyers

This lamp is frequently searched by its product codes 9653547777 and 6350CC, so using these numbers when looking up fitment will increase the chance of finding the correct unit quickly. Installation is suitable for experienced mechanics and competent DIYers with basic tools. If the tailgate shows deformation or damaged mounting points, additional repair may be required to ensure correct lamp alignment and sealing.

Reliable replacement bulb socket designed for the tailgate lamps of Citroën C4 Picasso and compatible Grand Picasso models. This socket secures the rear lamp bulbs, provides the electrical contact surface and includes a short length of wiring to simplify installation. Ideal for workshop technicians and DIY enthusiasts searching by part number (e.g. 9653547480, 6351CC, 9653547777, 6350CC), this unit restores stable lighting operation when the original socket shows signs of wear or electrical failure.

Technical Information

• Manufacturer: Stellantis / Citroën
• Model(s): Citroën C4 Picasso, Citroën C4 Grand Picasso
• Product Codes: 9653547480, 6351CC, 9653547777, 6350CC
• Other Numbers: 6351CA, 6351cc, 6350cc

Product Function And Benefits

The bulb holder (socket) provides mechanical support and the electrical contacts for rear tailgate bulbs (brake, indicator, tail lamp). A secure socket ensures consistent contact pressure and correct grounding to avoid flicker or intermittent failure. Supplied with a piece of wiring, this part helps when the original connector or short section of harness is damaged or brittle.

Common Failure Modes

• Corrosion of contact pins due to moisture ingress causing poor electrical connection and intermittent lighting.
• Heat-related deformation or melting from high-wattage bulbs or repeated thermal cycling leading to cracked plastic or loose contacts.
• Broken or frayed wires at the connector caused by repeated opening/closing of the tailgate and vibration.
• Burnt contacts from arcing when contact resistance increases.

Installation Recommendations

• Disconnect the battery before starting work to avoid short circuits and ensure safety.
• Remove the tailgate inner trim to access the lamp assembly. Keep fasteners and clips organised for reassembly.
• Unplug the lamp harness and remove the lamp cluster if required to reach the bulb holder. Note the orientation of the socket before removal (twist-lock or clip style).
• Carefully release the old socket (twist or unclip) and replace with the new unit. Ensure wiring is routed without pinching and that any seals are seated to prevent water ingress.
• Use dielectric grease on contact pins to reduce future corrosion and improve electrical reliability.
• After installation, reconnect the battery and test all rear lamp functions (tail, brake, indicator, reverse if applicable) before reassembling the trim.
• If the harness shows additional damage, repair or replace affected sections and ensure proper grounding.

Why Replace

Symptoms that indicate a failing bulb holder include flickering lamps, lamps that work intermittently, visible corrosion or melted plastic around the socket, or lights that fail only when the tailgate is moved. Replacing the socket and the short wiring piece is a cost-effective repair that restores safe, legal rear lighting and prevents further electrical damage.