Mercedes C117 Door Wiring Harness Anti-Theft Rear Left Right N/O/S A1175407609

Mercedes C117 Anti-theft Door Harness Rear Left/Right is an original electrical installation component designed to support the anti-theft system in the rear of the vehicle. Specifically designed for Mercedes C117 models, this harness ensures stable electrical connections and proper communication between body modules and security components. It's a practical solution for workshops and owners seeking a factory-fitted component to repair or replace damaged wiring in the rear doors.

Specifications and technical data

• SKU: RHD-A1175407609
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1175407609
• Substitutable numbers: A1175407609, A 117 540 76 09
• Location on the vehicle: Rear, Right, Left
• Part type: Wire Harness
• Category: Wiring Harnesses, Cables & Connectors

Vehicle Application and Function

This harness belongs to the Wires, Harnesses, and Connectors category and is intended for installation in the rear of the vehicle, on either the left or right side. It is responsible for routing electrical signals between the doors and the body's electrical system, with a particular focus on circuits related to the anti-theft function. Thanks to its factory-specific fit for the Mercedes C117's electrical architecture, this component ensures the correct operation of comfort and safety systems without requiring any modifications to the existing installation.

Construction and Performance Specifications

The harness is constructed as a complete set of wires with appropriately selected cross-sections, terminated with connectors compatible with factory sockets in the doors and body. The arrangement of wires, segment lengths, and connector configurations are adapted to the geometry of the rear body section for both left-hand and right-hand drive versions, facilitating installation within original grommets and mounting points. The connectors used are designed to operate under typical door operating conditions, accounting for hinge movement, temperature fluctuations, and humidity.

As an original Mercedes part, the harness maintains compliance with factory standards for wire quality, insulation, and electrical contacts. Appropriate shielding and wire cross-section selection contribute to stable signal transmission in body systems, which is particularly important for circuits responsible for anti-theft functions.

Service Application and Installation

The Mercedes C117 Anti-theft Door Harness is particularly useful in situations where wires in the door grommet have been damaged, there are communication issues between modules, or the rear door lock and monitoring functions are not working correctly. Using an original component allows for the restoration of the system's proper operation without the need for custom wiring or interference with the factory installation.

The vehicle placement covers the rear of the body on the left or right side, allowing the harness to be matched to the specific vehicle configuration. Installation involves routing the wires along the original paths, connecting the plugs to modules and actuators, and securely fastening the harness in its mounts to prevent chafing and excessive bending.

Benefits of Using an Original Mercedes Harness

Using a factory door harness for the anti-theft system offers several practical benefits:

• maintaining full compatibility with the Mercedes C117 electrical architecture,
• reducing the risk of communication errors between body modules,
• simplifying future diagnostics due to compliance with service diagrams,
• eliminating the need for installation modifications or the use of universal solutions.

For owners and workshops, this translates to a more predictable repair process and a lower risk of issues with the vehicle's security system operation after component replacement. Choosing an original harness from the Wires, Harnesses, and Connectors group is especially crucial for safety systems, where connection stability and correct communication are paramount for the anti-theft functions to work effectively.

If you are planning a comprehensive repair or upgrade of the rear door electrical installation in your Mercedes and require other parts from the same group, such as door wires, sill harnesses, or body installation connectors, check the available parts in the Mercedes Wires, Harnesses, and Connectors category.

To compare design solutions used in different brands and to better understand the role of electrical installations in modern cars, it is worth reading the article describing the evolution of a popular hot-hatch – Hot Hatch Legend: The Evolution of the VW Golf GTI from Mk1 to Mk8 – Design Changes and VW Car Parts.