Audi A8 D4 Door Wiring Loom Harness Cables Rear Right O/S 4H0971687BK

Audi A8 D4 Door Wiring Loom Harness Cables Rear Right O/S is an original electrical installation component designed for the rear right door of the Audi A8 D4 generation with a diesel engine. Thanks to its factory design, the wiring harness ensures stable electrical connections between the door and the body, which translates into the proper operation of all supported components. This solution is dedicated to users who expect precise fitment and the maintenance of factory operating parameters for door systems.

Specifications and technical data

• SKU: 4H0971687BK
• Mark: Audi
• Condition: Used
• OEM Part Number: 4H0971687BK
• Substitutable numbers: 4H0971687BK, 4H0 971 687 BK, 4H0971693AA, 4H0 971 693 AA
• Location on the vehicle: Rear, Right
• Fuel type: Diesel
• Category: Wiring Harnesses, Cables & Connectors

Purpose and function in the vehicle

The presented wiring harness belongs to the Cables, wiring looms and connectors group and is specifically designed for installation in the rear right door of an Audi A8 D4 with a diesel engine. It is responsible for transmitting signals and power between the body modules and components located in the door, such as window controls, central locking, or other electrical functions provided in the vehicle's specific configuration.

Its placement in the rear right zone allows for proper cable routing, minimizing the risk of abrasion, mechanical damage, and signal transmission interference. Using a dedicated harness instead of universal solutions facilitates installation and reduces the possibility of installation errors.

Construction, connectors and compatibility

The harness is constructed as a complete set of wires with factory connectors matched to the electrical architecture of the Audi A8 D4. Properly selected wire cross-sections and the pin layout in the connectors ensure correct communication with control modules and actuators in the door.

Key design features include:

• dedicated wire length matched to the geometry of the rear right door,
• factory connectors allowing for installation without modifying the wiring,
• wire layout designed for operation in a vehicle with a diesel engine, in accordance with the factory electrical configuration.

As a result, the harness can be integrated into the existing system without the need for soldering or adaptation, which is important for both the durability of the connections and operational safety.

Condition, service application and benefits of installation

This item comes from the used parts group, which allows for economical repair while maintaining original Audi specifications. Replacing a damaged harness with a functional OEM component is a recommended solution in the case of:

• interruptions in door electrical operation (e.g., intermittently malfunctioning controls),
• visible damage to insulation or wires in the door grommet,
• communication problems with modules on the rear right side.

Using a dedicated harness reduces the risk of errors in comfort and safety systems and facilitates future diagnostics, as the system remains consistent with the manufacturer's service documentation.

Why choose the original Audi A8 D4 wiring harness

Compared to replacements or "on-the-spot" repairs, installing a factory rear right door wiring harness ensures:

• secure fit to the body – proper routing of wires and mounting points,
• compatibility with the electrical installation of a diesel-powered vehicle,
• maintenance of factory electrical parameters, which is significant for the operation of comfort modules.

This solution is particularly recommended for professional repairs where consistency of results, compliance with manufacturer guidelines, and the ability to seamlessly integrate with the vehicle's existing electrical architecture are important.

Expanding Audi electrical system upgrades

If you are planning a comprehensive repair or upgrade of the door area in your Audi and need other elements from the same group, such as additional harnesses, adapter cables, or door connectors, check out the available parts in the Audi Cables, wiring looms and connectors category.

For users who are simultaneously servicing comfort, air conditioning, and heating systems, a guide describing the selection of used OEM components and maintenance schedules may be helpful – you can find it in the article Air conditioning and heating – part selection and maintenance for year-round comfort, which facilitates the planning of service work throughout the vehicle.