Mercedes W203 Rear Tail Light Left N/S Lamp Side Plug Socket Wiring A2115450328

Mercedes C W203 Rear Lamp Wiring Harness Left A2038201964 is an original electrical system component designed to service the driver's side rear lighting. It enables proper power supply and control of the lamp's functions, ensuring stable operation of the parking lights, brake lights, and turn signals. Thanks to its factory design, the harness guarantees a secure fit with the Mercedes electrical system and correct signal routing within the lighting system.

Specifications and technical data

• SKU: A2038201964-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2038201964
• Substitutable numbers: A2038201964, A 203 820 19 64, A2115450328, A 211 545 03 28
• Location on the vehicle: Rear, Left
• Category: Rear Light Assemblies

Purpose and Function of the Harness

The presented wiring harness is a component in the Rear Lights and Brake Lights category, responsible for connecting the left rear lamp to the vehicle's main electrical system. Its placement on the vehicle, specified as rear – left side, means this component works with the lamp mounted on the driver's side, supporting all lighting functions intended by the manufacturer.

The harness has been specifically designed for Mercedes vehicles, which translates to:

• maintaining the correct order of wires and connectors in the lighting circuit,
• appropriate fit with body mounting points and guides,
• correct interaction with the electrical system's control modules.

Compatibility and Replacement Numbers

The component has a dedicated OEM part number and assigned interchangeable numbers, which simplifies selecting the correct harness for a specific Mercedes C-Class W203 configuration. The presence of reference numbers allows for technically precise identification of the product in manufacturer catalogs and comparison with harnesses used in related models.

This solution allows the user to verify the part's compatibility with their vehicle, and a mechanic can quickly confirm compatibility based on service documentation, reducing the risk of installing the wrong part.

Mounting Characteristics

The left rear lamp wiring harness has been prepared as a component intended for installation in factory mounting points. The appropriately shaped wire routing and correctly selected connectors allow for:

• direct connection to the rear lamp and the vehicle's electrical system,
• maintaining the original wire routing path within the body,
• minimizing interference with the existing electrical system.

This type of solution helps maintain the integrity of the electrical system and also facilitates future diagnostics of potential lighting faults.

Product Condition and Practical Application

The offered wiring harness is a used part, which means it comes from a dismantled vehicle and has been verified for its suitability for further use. For many users, this represents a favorable compromise between repair cost and maintaining the original construction of the Mercedes electrical system.

Replacing a damaged or corroded harness with an original used part allows for the restoration of correct rear lighting operation, eliminating common issues such as intermittent light operation, dashboard errors, or unstable lamp connector connections.

Why Choose an Original Mercedes Harness

Using factory electrical system components in Mercedes vehicles helps maintain the integrity of the entire system and reduces the risk of problems arising from improperly fitted aftermarket parts. For the left rear lamp harness, it is particularly important to ensure:

• maintaining the correct electrical parameters of the wires,
• secure connection with control modules and the lamp,
• resistance to typical operational loads in the rear of the vehicle.

Choosing an original harness for the Mercedes C-Class W203 allows for maintaining the lighting system's functionality at the level intended by the manufacturer and facilitates potential future repairs and diagnostics.

If you are planning a comprehensive repair of the lighting system in your Mercedes and are also interested in other components related to rear lamps, wires, and connectors, check the available parts in the Mercedes Rear Lights and Brake Lights category.

When deciding whether to use a used part or invest in the refurbishment of other components, a practical guide may be helpful – you can find more on this topic in the article Refurbished or Used Original – Which Part to Choose for Repairs?.