Mercedes C117 Rear Door Wiring Loom Harness Cable Left N/S A1175402605

Mercedes C117 Rear Door Wiring Loom Harness Cable Left N/S is an original electrical component from the Wires, harnesses and connectors group, designed to support the rear left door area in the C117 body style. This used, factory-made harness ensures proper signal and power routing to components mounted in the door, allowing for the maintenance of correct electrical system functionality and installation consistency in Mercedes vehicles.

Specifications and technical data

• SKU: A1175402605
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1175402605
• Substitutable numbers: A1175402605, A 117 540 26 05
• Location on the vehicle: Rear, Left
• Part type: Wire Harness
• Category: Wiring Harnesses, Cables & Connectors

Purpose and vehicle placement

The presented harness is dedicated for installation in the rear left door area, meaning it is responsible for connecting the door to the vehicle's main body electrical installation. The design of the wires and connectors is matched to the electrical architecture of the C117 body, allowing the component to enable the proper operation of parts located in the door, such as window controls, central locking, or lighting, in accordance with the manufacturer's original design.

Technical and functional characteristics

The harness belongs to the Wires, harnesses and connectors group, meaning it was designed as a complete assembly of wires with appropriately selected connectors and mounting points. The layout of the wires, section lengths, and connector configuration are prepared for the specific geometry of the door and body pillar, which facilitates installation and minimizes the risk of mechanical stress and abrasion during operation.

Factory connectors enable a secure, stable connection to the vehicle's installation, and appropriately selected wire cross-sections ensure correct electrical parameters for the supported circuits. This maintains compatibility with the vehicle's diagnostic systems and proper communication between control modules and actuators in the door.

Application in service and repairs

The rear left door wiring harness is particularly useful in situations where the installation has been damaged as a result of abrasion, contact corrosion, mechanical interference, or post-accident repairs. Using an original Mercedes component allows for:

• restoring full electrical functionality of the door without the need to fabricate wires,
• maintaining the factory routing of the installation and mounting points,
• reducing the risk of connection errors and electrical diagnostic problems.

The used component provides a cost-effective solution while maintaining compliance with the vehicle's original specifications. For workshops and service centers specializing in the Mercedes brand, this is a practical way to efficiently repair the door installation without compromising on fitment.

Benefits of using an original harness

Using a factory door harness in the C117 body translates into a number of practical benefits:

• Precise fit to the body – wire lengths, connector placement, and brackets correspond to the door and pillar construction, which facilitates assembly and service.
• Consistency with the vehicle's electrical installation – the harness works with existing modules and controllers, maintaining the factory connection logic.
• Reduction of modifications – no need for cutting, soldering, or adapting universal wires reduces the risk of future failures.

As a result, this component is particularly valuable for vehicle repairs where it is important to maintain the original structure of the installation and the correct cooperation of all electrical systems.

Integration with other installation elements

The rear left door harness works with other parts of the body installation, creating a coherent system of wires and connectors. During comprehensive work in the door area, it is worth paying attention to the condition of other harnesses, intermediate connectors, and mounting elements to avoid localized repairs that could generate further faults in the future.

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

Support for interior upgrades

When expanding or refreshing cabin equipment – for example, when replacing seats, steering wheels, or multimedia systems – it is crucial to properly route and connect the electrical installation. Additional tips on selecting components, planning upgrades, and practical aspects of installation can be found in the article Premium interior for half the price: second-hand seats, steering wheels, and multimedia, which discusses issues of compatibility, installation, and operation of used components.