Audi A3 8Y Rear Taillight Lamp Wiring Harness Loom Cable Left N/S 8Y0945308A

Audi A3 8Y Rear Taillight Lamp Wiring Harness Loom Cable Left N/S is an original electrical installation component designed to support the rear left lighting in the Audi A3 8Y generation model. Thanks to its factory design, it ensures a secure electrical connection, proper communication with body control modules, and stable operation of the taillight. This solution is particularly useful for post-collision repairs, replacing a damaged lamp, or restoring full lighting functionality.

Specifications and technical data

• SKU: 8Y0945307A-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 8Y0945307A
• Substitutable numbers: 8Y0945307A-1-1, 8Y0945307A, 8Y0 945 307 A
• Location on the vehicle: Rear, Left
• Part type: Wire Harness
• Category: Wiring Harnesses, Cables & Connectors

Purpose and function of the wiring harness

The presented wiring harness is dedicated to installation in the rear left part of the body, where it is responsible for power supply and signal transmission to the combination lamp. A correctly selected component of this type:

• ensures proper operation of position lights, brake lights, turn signals, and other lamp functions,
• minimizes the risk of errors in onboard lighting-related systems,
• facilitates service by maintaining factory wire routing and connector placement. By using an original part from the Wires, harnesses, and connectors category, compatibility with the vehicle's electrical system and proper cooperation with body electronics are maintained.

Benefits of using an original Audi wiring harness

Choosing an original wiring harness for the taillight translates into a number of practical advantages in daily vehicle operation:

• Factory fit – wire length, connector placement, and routing are consistent with the manufacturer's design, which facilitates installation and eliminates the need for modifications.
• Stable electrical connections – dedicated connectors reduce the risk of looseness, contact overheating, or intermittent power supply to the lamp.
• Operational safety – efficient rear lighting is crucial for vehicle visibility on the road, especially in difficult weather conditions.
• Consistency with the vehicle's installation – the harness works with factory control modules, which helps avoid diagnostic errors and light failure messages.

Application in repairs and upgrades

This wiring harness is suitable both for standard replacement of a damaged element and for more extensive service work in the rear part of the vehicle. It is particularly useful when:

• the installation has been damaged as a result of a collision or corrosion,
• it is necessary to replace the taillight along with the wiring,
• you are repairing lighting errors related to an open circuit or a damaged connector. If you are planning broader equipment modifications or retrofitting the car with components from higher versions, it is worth checking out our retrofit guide: check how to use used parts for professional car retrofitting. This will allow you to better plan work on the electrical installation and select the appropriate components.

Product characteristics and condition

The offered wiring harness comes from the Audi brand, which means maintaining the vehicle manufacturer's quality standards and compliance with factory technical documentation. The product is in used condition, making it an economical solution while maintaining proper performance parameters. The placement on the vehicle, defined as rear left, facilitates clear identification of the part when selecting it for a specific body configuration. Before installation, it is recommended to perform a standard check of the condition of the connectors and wire insulation to ensure trouble-free operation after installation.

Summary

Audi A3 8Y Rear Taillight Lamp Wiring Harness Loom Cable Left N/S is a practical solution for users and workshops that want to restore full efficiency of the rear lighting on the driver's side while maintaining factory standards. The original design, dedicated placement, and compatibility with the vehicle's electrical system make this a part particularly recommended for professional repairs and service of the Audi A3 8Y.