Audi A3 8V Door Wiring Harness Loom Rear Left Right N/O/S 8V5971687Q

Audi A3 8V Door Wiring Harness Loom Rear Left Right is an original electrical system component designed to support the rear doors on both the left and right sides of the Audi A3 8V generation model. Thanks to its factory design, the harness ensures proper electrical signal routing and a stable connection between the door and the vehicle body, which translates into reliable operation of the door equipment. This solution is particularly useful for post-collision repairs, door replacements, or damage to the original wiring.

Specifications and technical data

• SKU: 8V5971687Q
• Mark: Audi
• Condition: Used
• OEM Part Number: 8V5971687Q
• Substitutable numbers: 8V5971687Q, 8V5 971 687 Q
• Location on the vehicle: Rear, Right, Left
• Category: Wiring Harnesses, Cables & Connectors

Purpose and vehicle placement

The presented wiring harness is designed for installation in the rear doors, with the possibility of application on both the left and right sides. It is responsible for the electrical connection between the modules and connectors in the door and the vehicle's main wiring system, which is crucial for the correct operation of components such as actuators, window controls, or door lighting.

Thanks to dedicated wire routing and factory connectors, the harness allows for maintaining the original Audi electrical architecture, minimizing the risk of installation errors and compatibility issues.

Construction and function of the wiring harness

The harness belongs to the electrical system group referred to as Wires, harnesses, and connectors. It contains a set of wires with appropriately selected cross-sections and factory connectors that enable quick and secure connection to control modules and other components in the door.

The arrangement of wires and connectors is adapted to the geometry of the Audi A3 8V rear doors, which facilitates routing the installation through the original mounting points. Such a solution limits mechanical stress, reduces the risk of insulation abrasion, and ensures stable operation of the system over the long term.

Service application and installation benefits

The use of an original wiring harness in the Audi A3 8V rear doors is particularly recommended in situations where:

• wires in the grommet between the door and the pillar have been damaged,
• complete rear doors are being replaced and it is necessary to restore the installation,
• intermittent power or communication problems occur with electrical components in the door,
• spot repair of wires is uneconomical or carries the risk of recurring faults.

Choosing an original harness allows for maintaining the consistency of the electrical system and facilitates future diagnostics, as the layout remains compliant with the manufacturer's service documentation.

Product characteristics and condition

The offered wiring harness comes from the Audi brand, which means compliance with factory quality and fitment standards. The item is used, making it a cost-effective solution while maintaining the original installation specifications. For workshops and individual users, this means the possibility of performing repairs using a part from the same product line as the vehicle's factory equipment.

The harness is intended for direct installation in the appropriate area of the vehicle, and the use of factory connectors allows for repairs to be carried out without the need to interfere with the wire structure, which reduces labor time and the risk of errors.

Expanding the installation in Audi – related items

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

To broaden your knowledge about selecting used OEM components and their integration with the existing electrical system, it is worth reading an article describing the practical aspects of installing and diagnosing turbocharging systems – you can find it here: Go-Kart Feeling XXL: used N18 turbocharger versus B48 – what to choose for a Mini Cooper S?.