Mercedes W447 Rear Lamp Plug Wiring Socket Left N/S Tail Light A4478201164

Mercedes W447 Rear Lamp Plug Wiring Socket Left N/S Tail Light is an original electrical installation component designed to support the rear lighting on the left side of Mercedes vehicles. It ensures a stable connection between the lamp and the vehicle's wiring harness, which translates into the reliable operation of position lights, brake lights, and turn signals. This is a practical solution for users who want to restore the proper operation of the lighting system without interfering with the entire installation.

Specifications and technical data

• SKU: A4478201164-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A4478201164
• Substitutable numbers: A4478201164, A 447 820 11 64
• Location on the vehicle: Rear, Left
• Part type: Rear Light Assembly
• Category: Rear Light Assemblies

Purpose and function in the vehicle

The presented rear lamp wiring plug has been designed specifically for installation in the rear area, on the left side. It is responsible for a secure, mechanically stable, and electrically correct connection of the lamp to the vehicle's installation, which is crucial for:

• the correct operation of brake and position lights,
• consistent operation of turn signals and rear lighting,
• maintaining the continuity of electrical circuits without signal interruption.

Thanks to its dedicated fit for the W447 series body structure, installation is carried out in an orderly manner, without the need for modifications to the wiring.

Construction and fitment for Mercedes W447

The Mercedes W447 Rear Lamp Plug Wiring Socket Left N/S Tail Light is a component prepared for factory sockets and wire routing in Mercedes W447 models. The connector design allows for:

• precise plugging into the rear lamp without play or tension,
• maintaining the proper arrangement of wires within the rear part of the body,
• reducing the risk of damage resulting from vibrations and suspension movement.

Proper fitment to the specific vehicle model facilitates service and diagnostics, and also helps avoid problems typical of universal connectors.

Service application and benefits of installation

The element will prove particularly useful in situations where the factory connector has been damaged, contacts have melted, or the installation has been tampered with during previous repairs. Replacing the rear lamp wiring plug with an original Mercedes component allows you to:

• restore the correct operation of the rear lighting on the left side,
• minimize the risk of errors in light control systems,
• maintain the installation's compliance with the manufacturer's factory standards.

This solution is recommended both for professional workshops and for conscious DIY repairs, where durability and compliance with technical documentation are the priority.

Condition of the element and practical aspects

The product comes from disassembly and is offered as a used part, which is a cost-effective solution while maintaining the manufacturer's original specifications. Choosing such a component allows you to reduce expenses when repairing the lighting system, while maintaining the high quality of workmanship typical of the Mercedes brand.

Before installation, it is recommended to perform a standard verification of the condition of the contacts and the correctness of the wire routing in the vehicle to fully utilize the potential of the element and ensure stable operation of the rear lights.

Expansion of the Mercedes rear lighting system

If you are planning a comprehensive repair or upgrade of the rear lighting zone in your Mercedes and need other elements from the same group, such as combination lamps, control modules, or additional wiring, check the available parts in the Mercedes rear lights and brake lights category.

For users interested in a broader look at technical issues related to vehicles of this brand, including the impact of accessories on the reliability of power units, we recommend an article discussing the characteristics of a popular diesel engine and the plan for its refurbishment – you can find it here: The second life of the Mercedes OM642 engine – how injectors and a turbocharger restore the power of the 3.0 V6 CDI.