Audi A3 8V Rear Tailg Light Wiring Harness Cable Left N/S 8V4945069

Audi A3 8V Rear Tailg Light Wiring Harness Cable Left N/S is an original electrical system component designed to support the rear left lighting in the Audi bodywork. Thanks to the factory-fit design and proper cable routing, the harness ensures stable power supply to the lamp, correct communication with the vehicle's electronics, and reduces the risk of lighting system errors. It is a practical solution for post-collision repairs, lamp replacement, or damage to the factory installation.

Specifications and technical data

• SKU: 8V4945069-2
• Mark: Audi
• Condition: Used
• OEM Part Number: 8V4945069
• Substitutable numbers: 8V4945069, 8V4 945 069
• Location on the vehicle: Rear, Left
• Part type: Wire Harness
• Category: Wiring Harnesses, Cables & Connectors

Purpose and function in the electrical system

The presented wiring harness is a component dedicated to the rear left part of the vehicle, where it is responsible for connecting the lamp to the main electrical installation. It includes power and signal wires leading to, among others, the position lights, brake lights, turn signals, or license plate lighting (depending on the specific lamp configuration in a given vehicle). Thanks to the factory connector layout and appropriate cable length, installation is carried out in an orderly manner, without the need to modify the wiring.

Construction, connectors, and compatibility

As an item from the Cables, harnesses, and connectors group, this harness has been designed to maintain the correct wire cross-section, insulation resistance to conditions in the rear part of the body, and secure mounting in factory routing points. The connectors used are matched to the original tail lamp and the vehicle's installation, which avoids soldering, cutting wires, or using adapters. Such a solution reduces voltage drops, minimizes the risk of contact corrosion, and facilitates the diagnosis of potential faults in the future.

The placement on the vehicle, specified as rear left, facilitates clear identification of the part when selecting components for a specific repair. This allows a mechanic or automotive electrician to quickly verify whether the given harness is responsible for the correct area of the body and whether it will work with the installed lamp.

Benefits of using an original Audi harness

Choosing an original wiring harness for an Audi brings a number of practical benefits in daily vehicle operation. The most important include:

• Factory fit – compatibility with the body structure and mounting points in the trunk and around the lamp.
• Stable electrical connections – properly selected connectors and wire cross-sections reduce the risk of overheating and voltage drops.
• Easier diagnostics – maintaining the original wiring layout facilitates work with diagnostic testers and installation diagrams.
• Operational safety – properly functioning rear lighting affects vehicle visibility and signal clarity for other road users.

The used item is a good choice for economical repairs when you want to maintain original build quality at reasonable service costs. The factory design of the harness allows you to avoid makeshift repairs to the installation, which often result in subsequent lighting problems.

Application in service practice

The rear left tail light wiring harness will prove particularly useful in situations where the installation has been damaged as a result of a rear-end collision, connector corrosion, wire abrasion, or improper previous repairs. Using a complete, original harness allows you to restore the installation to a state close to the factory condition, without the need to reconstruct individual wires.

During installation, it is worth paying attention to the correct routing of wires in factory holders and the precise seating of connectors in the lamp and the main vehicle installation. This approach reduces the risk of subsequent looseness, circuit breaks, or the appearance of errors in the light control system.

Additional materials and related products

If you are planning a comprehensive repair or modernization of the rear lighting zone in your Audi and need other elements from the same group, such as additional harnesses, connectors, or cable sections, check the available parts in the Audi cables, harnesses, and connectors category.

To better plan work on the lighting system and consciously select components, it is worth reading the guide on selecting lamps and headlights – you will find practical tips in the article Original lamps or replacements? Check why used headlights are a guarantee of safety and perfect lighting.