Mercedes W205 Rear Tailgate Inner Lamp Wiring Harness Cable Left N/S A2059061303

Mercedes W205 Rear Tailgate Inner Lamp Wiring Harness Cable Left N/S is an original electrical system component designed to support the inner tail lamp on the driver's side. Thanks to its factory-fit design for the W205 body, it ensures a stable electrical connection and proper operation of the rear lighting, including brake and position light functions. This is a practical solution for users who want to restore full lighting system efficiency without compromising on compatibility.

Specifications and technical data

• SKU: A2059061303-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2059061303
• Substitutable numbers: A2059061303, A 205 906 13 03
• Location on the vehicle: Rear, Left
• Category: Rear Light Assemblies

Purpose and function in the vehicle

The described wiring harness is an electrical system component responsible for power supply and control signals for the rear lamp in the tailgate on the left side. It is mounted in the rear part of the body, in the tailgate area, where it connects the lamp to the vehicle's main wiring harness. A correctly selected harness eliminates issues with flickering lights, intermittent brake light failure, or lighting errors on the instrument cluster.

Construction and fit for Mercedes W205

The wiring harness has been designed specifically for the W205 body geometry, which translates into:

• appropriate wire length tailored for routing in the tailgate,
• connectors compatible with the factory inner lamp on the left side,
• a wire layout that allows for proper installation without tension or twisting.

As a result, the installation process is orderly, and the harness does not interfere with the tailgate upholstery or its opening mechanism after installation. The original construction promotes seal integrity and resistance to typical operational loads in the rear of the vehicle.

Benefits of using an original wiring harness

Using a dedicated wiring harness in the tailgate lamp area helps avoid makeshift repairs, which often lead to further malfunctions. The most important advantages include:

• maintaining the correct operation of rear lighting and brake functions on the left side,
• reduced risk of overheating or oxidation of connections thanks to factory connectors,
• easier diagnostics of potential electrical faults in the future,
• consistency with the original Mercedes W205 electrical schematic.

This solution is particularly beneficial for post-collision repairs, replacing a damaged lamp, or refurbishing the wiring in the tailgate, where cables are exposed to frequent bending.

Characteristics of the used component

The offered wiring harness comes from the secondary market, which allows combining factory fitment with a more cost-effective repair compared to a new component. This type of part is particularly attractive for older W205 models, where both functionality and a rational approach to the service budget are important. When installed correctly, the harness ensures stable operation of the lighting system in daily use.

Expanding rear lighting upgrades

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 cables, check the available parts in the Mercedes rear lights and brake lights category.

For drivers interested in the wider use of secondary market components in German cars, including in the context of repairs and modifications, you will find useful information in the article Audi on second-hand parts – tuning and repairs without losing quality, which shows a practical approach to used components and their impact on vehicle operation.