Mercedes W204 W212 Rear Door Wiring Loom Harness Left N/S A2045461080

Mercedes W204 W212 Rear Door Wiring Loom Harness Left N/S is an original electrical installation component designed for installation in the rear left door of vehicles in this series. Thanks to its factory design, the wiring harness ensures proper electrical signal routing and a stable connection between the door and the body, which translates into trouble-free operation of the door equipment. This is a solution for users who expect consistency with the Mercedes factory standard and want to avoid compatibility issues.

Specifications and technical data

• SKU: A2045461080
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2045461080
• Substitutable numbers: A2045461080, A 204 546 10 80
• Location on the vehicle: Rear, Left
• Part type: Wire Harness
• Category: Wiring Harnesses, Cables & Connectors

Purpose and vehicle placement

The presented wiring harness belongs to the Wires, harnesses and connectors group and is specifically designed for installation in the rear left door of Mercedes W204 and W212 class cars. Its placement in the rear area of the vehicle on the driver's side means that the component is responsible for handling the electrical system in this specific part of the body, in accordance with the factory installation layout. Such precise fitment for the specific mounting position reduces the risk of installation errors, facilitates servicing, and allows for maintaining the original routing of wires and connectors in the door.

Function in the door electrical system

The rear left door wiring harness acts as a link between the body installation and the modules and receivers located in the door. The appropriate design of the wires and connectors enables:

• stable transmission of control signals and power to electrical components in the door,
• maintaining proper wire organization in the grommet between the body and the door,
• reducing mechanical stress during door opening and closing. As a result, the harness supports the correct operation of electrical systems in the door, in accordance with the vehicle manufacturer's specifications.

Benefits of using an original Mercedes wiring harness

Using an original wiring harness in the rear left door provides a number of practical service and operational benefits:

• Factory fitment – wire length, connector placement, and harness geometry are prepared for the specific door configuration in W204 and W212 models.
• Consistency with the vehicle installation – the harness works with original connectors and modules, which reduces the need for modifications or soldering.
• Simplified installation – wires are routed in a logical, organized manner, which speeds up the mechanic's work and reduces the risk of incorrect connection. For users who value maintaining the original electrical architecture of their Mercedes vehicle, this is a technically safe and predictable solution in operation.

Product characteristics and service application

The offered harness belongs to the Mercedes brand, which means compliance with the factory design standards used in the electrical installations of this brand. The product is an aftermarket component, which allows for economical repair of the door electrical system while maintaining the original design of wires and connectors. The harness will be particularly useful in situations such as:

• repairing mechanical damage to wires in the door grommet,
• restoring electrical functionality after a collision or interference with the installation,
• comprehensive renovation of the door installation in vehicles used intensively.

Expanding the installation within Mercedes wires and harnesses

If you are planning a comprehensive repair or upgrade of the electrical zone in your Mercedes and need other components from the same group, such as additional door harnesses, body installation connectors, or service wire sections, check out the available parts in the Mercedes wires, harnesses and connectors category. For drivers interested in further vehicle personalization – for example, by installing a sports steering wheel from a higher trim line – practical tips on selecting and replacing such components may be useful, available in the article Personalization and ergonomics – when is it worth replacing the steering wheel with a premium model?.