Audi A3 8P Rear Side Door Wiring Loom Harness Socket Left Right N/O/S 8P4971687Q

Audi A3 8P Rear Side Door Wiring Loom Harness Socket Left Right is an original electrical installation component designed for the rear left and right doors. Thanks to its factory design, it ensures proper signal and power routing between the door and the vehicle body, which translates into stable operation of the door electronics. This used, original wiring harness is a great choice for post-collision repairs, door replacements, or when wires in the door grommet are damaged.

Specifications and technical data

• SKU: 8P4971687Q
• Mark: Audi
• Condition: Used
• OEM Part Number: 8P4971687Q
• Substitutable numbers: 8P4971687Q, 8P4 971 687 Q, 8P4971687R, 8P4 971 687 R
• Location on the vehicle: Rear, Right, Left
• Part type: Wire Harness
• Category: Wiring Harnesses, Cables & Connectors

Purpose and function in the vehicle

The presented wiring harness belongs to the Wires, harnesses, and connectors group and is responsible for the electrical connection between the rear doors and the vehicle body installation in the Audi A3 8P. The placement covers the rear part of the vehicle on both the left and right sides, allowing the component to be used for both rear doors. The harness supports typical circuits routed to the doors, such as power supply and control signals for components mounted in the door panel (e.g., control modules, actuators, switches), ensuring a stable connection via a dedicated socket in the grommet.

Construction and technical features

The component is a complete section of the door installation with a factory socket, adapted for installation in original Audi mounting points. The connectors used are matched to the A3 8P model installation, which facilitates assembly without the need to modify the harness or interfere with the factory wiring. Key features include:

• dedicated wire routing for the rear left and right doors,
• factory socket allowing for quick disconnection and connection of the harness,
• design prepared for operation in the grommet between the pillar and the door.

Service application and installation

The Audi A3 8P rear door wiring harness is suitable for repairs following wire damage in the grommet, door replacement, or restoring electrical functionality after unauthorized interference with the installation. Thanks to the original design, the installation proceeds in an orderly manner, maintaining factory wire routing paths. In practice, this means:

• easier identification of individual circuits,
• reduced risk of connection errors compared to custom-made harnesses,
• better compatibility with existing connectors and door equipment components.

Benefits of using an original wiring harness

Using an original wiring harness in the Audi A3 8P allows you to maintain the consistency of the electrical installation with the manufacturer's solutions. This is particularly important for advanced door electronics, where connection stability and correct wire assignment affect the operation of many functions simultaneously. A used OEM component is often a favorable compromise between cost and maintaining factory build quality. If you are planning a comprehensive repair or upgrade of the door electrical installation area in your Audi and need other components from the same group, such as additional harnesses, wires, or door connectors, check out the available parts in the Audi wires, harnesses, and connectors category. When selecting used electrical installation components, it is worth consciously assessing their condition and the cost-effectiveness of the purchase – you can find helpful tips in the article Renovation and repair of German cars: which used parts are worth buying and which are better to avoid?.