Mercedes W211 Tail Lamp Rear Light Right O/S Harness Loom Wire Cable A2118202464

Mercedes W211 Tail Lamp Rear Light Right O/S Harness Loom Wire Cable is an original electrical installation component designed to support the rear right lamp in this model's bodywork. It ensures a stable electrical connection between the lamp and the vehicle's wiring system, which translates into reliable rear lighting operation and proper communication with control modules. This is a practical solution for users who want to restore full lighting functionality after a collision, connector corrosion, or damage to the factory wiring harness.

Specifications and technical data

• SKU: A2118202464-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2118202464
• Substitutable numbers: A2118202464, A 211 820 24 64
• Location on the vehicle: Rear, Right
• Category: Other Starters, Alternators, ECUs & Wiring

Purpose and function in the vehicle

The presented wiring harness is dedicated to the rear right side of the vehicle, where it is responsible for power supply and signal transmission to the lamp. A correctly selected harness:

• enables the proper operation of parking lights, brake lights, turn signals, and other lamp functions,
• minimizes the risk of electrical system errors resulting from unreliable connections,
• facilitates service, as the wires are organized according to the factory layout. Thanks to the preservation of the original wire routing geometry, installation is orderly, and the harness does not interfere with other body components.

Benefits of using an original Mercedes harness

Using a factory wiring harness for the rear right lamp in the W211 model allows you to maintain the consistency of the electrical installation with the rest of the vehicle. This means:

• proper matching of wire lengths and cross-sections to the lamp's electrical load,
• compatibility with factory connectors and sockets,
• reduction of the need for modifications, soldering, or the use of adapters. Such a solution is particularly beneficial during diagnostics – an electrician or mechanic works on a system consistent with the manufacturer's diagrams, which speeds up the localization of potential faults.

Component condition and installation aspects

The rear right lamp wiring harness comes from disassembly, which allows for maintaining the original character of the vehicle's installation. For the user, this means the possibility of an economical repair while maintaining the factory manufacturing standard. Before installation, it is recommended to:

• verify the condition of the connectors for contact oxidation,
• check the wire insulation in areas of potential abrasion,
• inspect the correct routing of the harness relative to the factory mounting points. A correctly installed harness reduces the risk of subsequent lighting problems, such as flickering lights or intermittent power loss.

Matching by numbers and selection support

The selection of the appropriate harness for a specific W211 body version and model year should always be confirmed based on manufacturer numbers and equipment configuration. In case of doubt, it is useful to compare it with the removed component and service documentation. To better understand the importance of OEM numbers when selecting components, you can use a practical guide on verifying parts by numbers, available in the article how to safely buy components online using OEM numbers.

Related products and technical knowledge

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 lamps, bulb holders, or additional sections of the electrical installation, check the available parts in the Other Mercedes category. For a comparison of technical solutions used in sports versions of other brands, including advanced drivetrain and braking systems, you can read the article Audi RS vs other models – what is hidden under the hood and chassis?, which shows how manufacturers differentiate construction in terms of performance and durability.