Lamp Plug Mercedes W221 Rear Left N/S Light Socket Wiring A2115450328

The Mercedes W221 Plug Socket Wiring Harness Left Rear Lamp is an original electrical component designed to service the driver's side rear lamp. Thanks to its factory fit for the W221 body, it ensures a secure electrical connection and stable operation of the rear lighting assembly, including position and brake lights. This is a practical solution for collision repairs, lamp replacements, or damage to the factory wiring harness.

Specifications and technical data

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

Purpose and Function in the Lighting System

The presented plug with socket and wiring harness is a component from the Rear Lights and Brake Lights group, responsible for the electrical connection of the left rear lamp of the vehicle. Its placement in the rear area, on the driver's side, allows for direct connection to the factory lamp without the need for installation modifications or adapters.

This solution is particularly useful when:

• the original connector was damaged during lamp removal,
• the installation in the rear left corner was repaired after a collision,
• intermittent lighting errors occur due to circuit breaks.

Connector Design and Installation Advantages

The plug with harness has been designed as a dedicated component for a specific body model, which translates to precise wire routing and proper positioning of the connector relative to the lamp. The factory connector geometry minimizes the risk of contact looseness, pin overheating, or accidental disconnection during vehicle operation.

Key installation advantages include:

• compatible geometry with the left rear lamp,
• designated working space in the rear body area,
• possibility of use as a repair part when replacing the lamp or a section of the wiring harness.

Service Application in Mercedes W221

This component is suitable for both standard replacement of a damaged lamp and more extensive bodywork and electrical work in the rear of the vehicle. Using an original plug with wiring harness helps maintain the integrity of the electrical system and reduces the need for soldering or using universal connectors, which often compromise system reliability.

In practice, this means:

• easier diagnosis of potential lighting faults,
• reduced risk of errors in control units related to incorrect circuit load,
• maintenance of the factory connection standard for the rear lamp.

Product Characteristics and Condition

The offered plug with wiring harness comes from a Mercedes vehicle, guaranteeing structural compatibility with the installation in the W221 model. The product is identified in the inventory system as SKU, making it easy to identify and select for a specific order. Additionally, the part has an assigned OEM part number and corresponding interchangeable numbers, which facilitates compatibility verification in service catalogs.

As a used market part, it has a specified condition, allowing for an economical repair of the lighting system while maintaining proper performance parameters. Its placement on the vehicle is described in the Placement on vehicle attribute, eliminating the risk of confusion between the left and right sides.

Support for Selection and Lighting System Expansion

If you are planning a comprehensive repair or upgrade of the rear lighting area in your Mercedes and need other components from the same group, such as complete rear lights, control modules, or additional wiring harnesses, check the available parts in the Mercedes Rear Lights and Brake Lights category.

If you are considering whether new or used parts would be a better choice for your situation, an article comparing both solutions in terms of cost and durability may be helpful: Car Parts – New or Used? Comparing Costs, Quality, and Durability.