Mercedes S205 Estate Rear Headlight Wiring Harness Cable Left N/S A2059064405

Mercedes S205 Estate Rear Headlight Wiring Harness Cable Left N/S is an original electrical installation component designed to support the left rear lighting in the estate body style. Thanks to its factory-fit for the specific model version, it ensures stable electrical connections and proper cooperation with the vehicle's lighting system. This used wiring harness is a great choice for professional lighting system repairs without the need for costly replacement of the entire lamp module.

Specifications and technical data

• SKU: A2059064405-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2059064405
• Substitutable numbers: A2059064405, A 205 906 44 05
• Location on the vehicle: Rear, Left
• Part type: Wire Harness
• Category: Wiring Harnesses, Cables & Connectors

Purpose and function in the vehicle

The presented wiring harness is a component from the Wires, harnesses, and connectors group, responsible for supplying power and control signals to the left rear headlight in the Estate body style. Its placement in the rear zone, on the left side, allows for direct connection to the factory lamp and the vehicle's main wiring harness, without the need for modifications or adaptations.

The layout of the wires and connectors is consistent with Mercedes' factory electrical architecture, which facilitates routing the harness through original mounting points and minimizes the risk of mechanical damage or abrasion during operation.

Construction and performance parameters

The rear headlight wiring harness consists of a set of wires with selected diameters and insulation, terminated with connectors compatible with the Mercedes installation. The design provides appropriate segment lengths and branches to ensure correct connection of all lamp functions (position lights, brake lights, turn signals, license plate lighting – depending on the specific car configuration) without excessive wire tension.

Using an original harness allows for maintaining electrical system consistency, including proper wire cross-sections, insulation resistance to external conditions, and compatibility with factory protections and controllers. This is particularly important in vehicles equipped with advanced lighting circuit diagnostics.

Benefits of using an original harness

Using a dedicated rear headlight harness on the left side in a Mercedes S205 Estate offers a number of practical benefits:

• secure fit to factory mounting points and wire routing paths,
• maintenance of proper cooperation with lighting control modules,
• reduced risk of installation errors compared to universal solutions,
• possibility to restore full lighting functionality after a collision or wire corrosion.

This used component allows for an economical repair while maintaining the original build quality characteristic of the Mercedes brand.

Professional installation and service application

The harness is intended for installation in the rear left part of the vehicle and should be installed following the factory wire routing and proper protection against moisture and mechanical damage. Installation by a person with experience in working with electrical systems in Mercedes vehicles is recommended, which will allow for fully utilizing the part's potential and avoiding issues with lighting system diagnostics.

The component will prove useful both in post-accident repairs and when fixing faults resulting from operational wear of the wires, ensuring the restoration of proper rear lighting operation and compliance with road safety requirements.

If you are planning a comprehensive repair or upgrade of the rear lighting electrical installation area in your Mercedes and need other components from the same group, such as additional harnesses, wire sections, or lamp connectors, check the available parts in the Mercedes Wires, harnesses, and connectors category.

To better plan your car's service and consciously choose original used components, it is worth reading our guide Mercedes – comfort, prestige, and durability. Why is it worth choosing original used parts?, which discusses the practical aspects of operation and selecting parts for this brand.