Door Wiring Mercedes W177 W247 Front Passenger Side Cable Harness A1775408220

Door Wiring Mercedes W177 W247 Front Passenger Side Cable Harness is an original electrical component from the Wires, harnesses, and connectors group, designed for use in the front passenger side of the vehicle. It is a practical solution for users who want to restore full functionality to the door wiring or perform a professional repair of the electrical system in their Mercedes.

Specifications and technical data

• SKU: A1775408220
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1775408220
• Substitutable numbers: A1775408220, A 177 540 82 20
• Location on the vehicle: Front
• Category: Wiring Harnesses, Cables & Connectors

Purpose and function of the passenger door wiring harness

The presented wiring harness is dedicated to Mercedes W177 and W247 models and is responsible for routing electrical signals within the front passenger door. It enables proper power supply and communication between the body control modules and components located in the door, such as window controls, central locking, or other electrical components specified by the manufacturer.

Positioned in the front area of the vehicle, the harness serves as a key link between the body wiring and the door, which has a direct impact on the reliability of comfort and safety systems.

Benefits of using an original Mercedes wiring harness

Using a factory-spec passenger door wiring harness ensures:

• compatibility with the vehicle's factory electrical architecture,
• correct wire lengths and connector fitment for the passenger door,
• stable electrical connections, reducing the risk of power interruptions,
• easier installation compared to universal solutions.

As a result, door wiring repairs can be carried out in an organized manner, without the need to modify the factory harness or use additional adapters.

Technical characteristics and installation

The harness belongs to the Wires, harnesses, and connectors group, meaning it has been designed for operation in an automotive environment, taking into account mechanical loads and temperature fluctuations typical for the front part of the body. The connectors used are prepared for compatibility with factory sockets in the passenger door and the vehicle's wiring structure.

The component is intended for installation in the front zone, which facilitates integration with the existing vehicle wiring. During replacement, it is recommended to route the wires according to the original factory paths, maintaining mounting points and protections to minimize the risk of chafing and system interference.

Product condition and service application

The offered wiring harness is in used condition, making it a practical choice for service repairs when you want to maintain the vehicle's original specifications while optimizing costs. This type of component is perfect for:

• repairing mechanical damage to wires in the passenger door,
• eliminating issues with the operation of electrical door functions,
• restoring the wiring system after a collision or interference with the upholstery.

Expanding electrical system upgrades

If you are planning a comprehensive repair or upgrade of the front door zone in your Mercedes and need other elements from the same group, such as additional harnesses, connectors, or wire sections, check out the available parts in the Mercedes wires, harnesses, and connectors category.

To better plan service work and subsequent stages of vehicle maintenance, it is also worth checking out practical tips on the operation and replacement of consumables – you will find them in the article TOP 10 most frequently replaced parts in your car, which will help you consciously approach keeping your vehicle in good technical condition.