BMW E90 E91 Wire Cable Plug Wiring Socket Rear Lamp Light Left N/S 6984754

BMW E90 E91 Wire Cable Plug Wiring Socket Rear Lamp Light Left N/S is an original lighting system component designed for the rear left lamp in 3 Series models. Thanks to its factory BMW design, it ensures a secure electrical connection and stable operation of the rear lighting assembly, which translates into safety and clear visibility of light signals on the road. This is a practical service solution for post-collision repairs, lamp replacement, or wiring damage.

Specifications and technical data

• SKU: 6984754-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6984754
• Substitutable numbers: 6984754, 63096131, 6940320, KD
• Location on the vehicle: Rear, Left
• Category: Rear Light Assemblies

Purpose and function in the lighting system

The described wire with socket is an electrical system component responsible for powering the rear left lamp in the BMW E90/E91 series. Mounted in the rear of the vehicle on the driver's side, it is responsible for correctly transmitting signals to the position light, brake light, turn signal, or fog light – depending on the specific lamp configuration. A properly selected wire socket minimizes the risk of lighting errors, dashboard warning messages, and technical inspection issues.

Construction and fitment for BMW E90/E91

The wire with socket has been designed as part of the factory BMW installation, which means it maintains the correct connector geometry, proper pin profile, and compatibility with the original rear lamp. As a result, installation is straightforward, without the need for modifying the wiring harness, soldering, or using adapters. Proper fitment with the lamp reduces the risk of looseness, contact overheating, and unstable electrical contact.

Condition, service application, and benefits of installation

The item comes from dismantling, which in practice means it is a used but still functional part intended for further use. In many cases, only the wiring harness or the socket at the lamp gets damaged, while the rest of the installation remains operational – replacing this specific wire allows for an economical repair of the lighting system without the need to purchase a complete new wiring harness. This solution is particularly beneficial for accident repairs and mechanical damage to connectors.

Why choose an original rear lamp wire

Using an original wire with socket for the rear lamp in a BMW E90/E91 ensures:

• factory fitment to the lamp and vehicle installation,
• stable electrical connection without the need to fabricate connectors,
• reduced risk of lighting errors and interference with control module operation,
• organized installation in the trunk and wheel arch area.

Thanks to this, the lighting system operates in a predictable manner, and service technicians have easier diagnostics and potential future repairs.

Expanding the BMW lighting system

If you are planning a comprehensive repair or upgrade of the rear lighting zone in your BMW and need other elements from the same group, such as lenses, lamp modules, or additional wiring, check out the available parts in the BMW rear lights and brake lights category.

More about choosing used electrical components

When selecting used electrical installation components – such as wires, modules, or connectors – it is worth knowing the basic principles of assessing their condition and fitment to a specific model. If you want to better understand when used electrical components are a reasonable choice and how to minimize the risk of operational problems, check out the article A second life for electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?.