BMW E90 N LCI Rear Lamp Cable Light Wiring Harness Loom Left 7289427

BMW E90 N LCI Rear Left Tail Light Harness Plug 7289427 is an original lighting installation component designed to service the rear left tail light in facelifted BMW 3 Series models. Thanks to its factory-matched connector geometry and precise fit with the specific harness, the plug ensures a stable electrical connection and proper operation of the brake light and other tail light functions. This is a practical solution for repairs after collisions, connector damage, or rear body harness refurbishment.

Specifications and technical data

• SKU: 4871733-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 4871733
• Substitutable numbers: 4871733, 63214871733, 7289427, 63217289427, 7154155, 63217154155
• Location on the vehicle: Rear, Left
• Category: Centre & Third Brake Light Assemblies

Purpose and Function in the Lighting System

The presented plug is an electrical installation component responsible for connecting the rear left tail light to the vehicle's harness. Its placement on the vehicle, identified as rear – left side, allows for unambiguous identification during lighting system diagnostics or repairs.

In practice, this means the component:

• enables correct power supply to the brake light and other rear tail light functions,
• minimizes the risk of contact looseness and circuit interruptions,
• facilitates servicing due to its factory-matched fit with the BMW lamp and harness.

Compatibility and Interchangeable Numbers

The plug is designed as a BMW part, with an assigned OEM number and a set of interchangeable numbers, which simplifies selecting the correct component based on service documentation or parts catalogs. The presence of multiple reference numbers allows the same part to be used in various equipment variants and model years within the same vehicle platform.

This allows the user to precisely verify part compatibility without needing to modify the installation when comparing data in a catalog or on an existing harness.

Product Characteristics and Application Benefits

As a component in the Main and Center Brake Lights category, the rear left tail light harness plug plays a crucial role in ensuring clear brake signaling and vehicle visibility. The use of original BMW design translates to:

• secure wire routing and proper harness positioning near the lamp,
• compatibility with factory lamp sockets without the need for custom connectors,
• reduced risk of installation errors, such as reversed wire connections.

The product is offered as a used OEM part, providing a cost-effective solution while maintaining compliance with the vehicle's factory specifications. This is particularly important for repairs where restoring the original electrical system without altering the harness structure is a priority.

Condition, Origin, and Service Application

The plug is from a dismantled vehicle and is classified as a used part, allowing for economical repair of the lighting installation while maintaining original manufacturing quality. Such components are often used in:

• post-accident repairs of the rear body section,
• remediation of corrosion or overheating damage to old connectors,
• harness refurbishment in vehicles operated in harsh conditions.

By maintaining the factory connector standard, installation involves simply plugging the connector into the lamp and integrating it with the existing harness, without the need for universal adapters.

Selection Support and Additional Information

If you are planning a comprehensive repair of the rear lighting system in your BMW and also need other components related to brake lights, wires, and connectors dedicated to this brand, check the available parts in the BMW Main and Center Brake Lights category.

For more practical information on how to effectively use dismantled parts in body and installation repairs, read the article: Replacing Body Parts with Used Ones – Can Dismantled Body Parts Look Like New?.